Month: November 2022

Polyamine functionalized carbon nanotubes: synthesis, characterization, cytotoxicity and siRNA binding was written by Singh, Prabhpreet;Samori, Cristian;Toma, Francesca Maria;Bussy, Cyrill;Nunes, Antonio;Al-Jamal, Khuloud T.;Menard-Moyon, Cecilia;Prato, Maurizio;Kostarelos, Kostas;Bianco, Alberto. And the article was included in Journal of Materials Chemistry in 2011.Computed Properties of C20H34N4O4 The following contents are mentioned in the article:

In this work the authors have synthesized a new series of cationic carbon nanotubes (CNTs) for siRNA binding. Both single- and multi-walled CNTs have been modified by addition or amidation reaction with short linear polyamine chains including putrescine, spermidine and spermine. All the new conjugates have been characterized with several spectroscopic and microscopic techniques. Their cytotoxic effects have been assessed on human lung carcinoma cell line. Finally, the authors have analyzed their capacity to bind siRNA towards the development of new carriers for gene silencing applications. The dispersibility properties and the capacity to complex siRNA of the different conjugates were strongly dependent on the position of the functional groups on CNTs (i.e. mainly at the tips following the amidation reaction or on the sidewalls by direct C-C addition). This study involved multiple reactions and reactants, such as Di-tert-butyl butane-1,4-diylbis((2-cyanoethyl)carbamatE) (cas: 194808-59-8Computed Properties of C20H34N4O4).

Di-tert-butyl butane-1,4-diylbis((2-cyanoethyl)carbamatE) (cas: 194808-59-8) belongs to nitriles. There has been no report on the microbial biosynthesis of nitriles and the physiological function of such enzymes, nor was it not even known whether aliphatic and aromatic nitriles are biological compounds or just petrochemicals. Nitriles are susceptible to hydrogenation over diverse metal catalysts. The reaction can afford either the primary amine (RCH2NH2) or the tertiary amine ((RCH2)3N), depending on conditions.Computed Properties of C20H34N4O4

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Synthesis and anti-inflammatory and analgesic activities of dihydropyrrolo[1,2-a]pyrazin-1-one was written by Pang, Jiyan;Sun, Guang;Fu, Decai;Sun, Shoufang. And the article was included in Zhongguo Yaowu Huaxue Zazhi in 2002.Recommanded Product: 123257-07-8 The following contents are mentioned in the article:

The structure-activity relationship (SAR) of the title compounds was studied to search for new anti-inflammatory and analgesic agents. 6-(R-carbonyl)-2-methyl-3,4-dihydropyrrolo[1,2-a]pyrazin-1-ones (R = R’- Ph, R”-benzyl, or phenylethenyl; R’ = H, 4-Cl, 2-Cl, 2,4- dichloro, 4-Me, 4-Br, 4-F, 2-F, 4-methoxy, or 4-nitro; R” = H or Cl) were designed based on the known SAR. The 3,4-dihydropyrrolo[1,2-a]pyrazin-1-one moiety (II) was prepared from Me 2-pyrrolecarboxylate by N-alkylation, reduction, and cyclization. The Friedel-Crafts reaction of compound II with acyl chloride afforded the 6-aroyl derivatives The anti-inflammatory and analgesic activities were tested in mice. Thirteen of 6-aroyl-2-methyl-3,4-dihydropyrrolo[1,2-a]pyrazin-1-ones were synthesized. Most of the compounds showed remarkable anti-inflammatory and/or analgesic activities in mice. The activities of one compound (R = 4-chlorophenyl) were equal to those of ibuprofen. This study involved multiple reactions and reactants, such as Methyl 1-(cyanomethyl)-1H-pyrrole-2-carboxylate (cas: 123257-07-8Recommanded Product: 123257-07-8).

Methyl 1-(cyanomethyl)-1H-pyrrole-2-carboxylate (cas: 123257-07-8) belongs to nitriles. There has been no report on the microbial biosynthesis of nitriles and the physiological function of such enzymes, nor was it not even known whether aliphatic and aromatic nitriles are biological compounds or just petrochemicals. Alkyl nitriles are sufficiently acidic to undergo deprotonation of the C-H bond adjacent to the CN group.Strong bases are required, such as lithium diisopropylamide and butyl lithium. The product is referred to as a nitrile anion. Recommanded Product: 123257-07-8

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Nitrile reduction in the presence of Boc-protected amino groups by catalytic hydrogenation over palladium-activated Raney-nickel was written by Klenke, Burkhard;Gilbert, Ian H.. And the article was included in Journal of Organic Chemistry in 2001.Electric Literature of C20H34N4O4 The following contents are mentioned in the article:

Nitriles NCCH₂CH₂NX-R-NXCH₂CH₂CN [R = (CH₂)_n, 1,2-cyclohexyl, 1,4-cyclohexyl, CHMeCH₂, X = Boc, n = 4, 7, 9, 12; R = 1,2-Ph, 1,3-Ph, 1,4-Ph, X = H] are reduced to primary amines in the presence of N-tert-butoxycarbonyl (Boc) groups. E.g., NCCH₂CH₂N(Boc)(CH₂)₄N(Boc)CH₂CH₂CN in absolute ethanol and THF was stirred with a mixture of Pd/C and Raney nickel and sodium hydroxide; the mixture was shaken for 8 h under 45 psi of hydrogen and worked up to give H₂N(CH₂)₃N(Boc)(CH₂)₄N(Boc)(CH₂)₃NH₂ in 84% yield. The reduction can be carried out under atm. H₂ pressure using com. avail. catalysts. Both Boc groups and aromatic moieties present in the starting material are well tolerated under the mild optimized conditions. This study involved multiple reactions and reactants, such as Di-tert-butyl butane-1,4-diylbis((2-cyanoethyl)carbamatE) (cas: 194808-59-8Electric Literature of C20H34N4O4).

Di-tert-butyl butane-1,4-diylbis((2-cyanoethyl)carbamatE) (cas: 194808-59-8) belongs to nitriles. Nitriles are polar, as indicated by high dipole moments. As liquids, they have high relative permittivities, often in the 30s. Nitriles are susceptible to hydrogenation over diverse metal catalysts. The reaction can afford either the primary amine (RCH2NH2) or the tertiary amine ((RCH2)3N), depending on conditions.Electric Literature of C20H34N4O4

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

(Bis)urea and (Bis)thiourea Inhibitors of Lysine-Specific Demethylase 1 as Epigenetic Modulators was written by Sharma, Shiv K.;Wu, Yu;Steinbergs, Nora;Crowley, Michael L.;Hanson, Allison S.;Casero, Robert A. Jr.;Woster, Patrick M.. And the article was included in Journal of Medicinal Chemistry in 2010.Computed Properties of C20H34N4O4 The following contents are mentioned in the article:

The recently discovered enzyme lysine-specific demethylase 1 (LSD1) plays an important role in the epigenetic control of gene expression, and aberrant gene silencing secondary to LSD1 overexpression is thought to contribute to the development of cancer. We recently reported a series of (bis)guanidines and (bis)biguanides that are potent inhibitors of LSD1 and induce the re-expression of aberrantly silenced tumor suppressor genes in tumor cells in vitro. We now report a series of isosteric ureas and thioureas that are also potent inhibitors of LSD1. These compounds induce increases in methylation at the histone 3 lysine 4 (H3K4) chromatin mark, a specific target of LSD1, in Calu-6 lung carcinoma cells. In addition, these analogs increase cellular levels of secreted frizzle-related proteins (SFRP) 2 and 5 and transcription factor GATA4. These compounds represent an important new series of epigenetic modulators with the potential for use as antitumor agents. This study involved multiple reactions and reactants, such as Di-tert-butyl butane-1,4-diylbis((2-cyanoethyl)carbamatE) (cas: 194808-59-8Computed Properties of C20H34N4O4).

Di-tert-butyl butane-1,4-diylbis((2-cyanoethyl)carbamatE) (cas: 194808-59-8) belongs to nitriles. Nitriles are polar, as indicated by high dipole moments. As liquids, they have high relative permittivities, often in the 30s. In addition, Nitriles can react with alkynes, which leads to an increase in carbon chain length (carbocyanation).Computed Properties of C20H34N4O4

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Dual-parameter correlation analysis of UV spectral data for 1-methyl-2-formyl-5-Y-substituted pyrroles and their hydrazones. First observation of a dominant polar effect was written by He, Roderick Hai-Ying;Jiang, Xi-Kui. And the article was included in Journal of Physical Organic Chemistry in 1999.Reference of 81698-03-5 The following contents are mentioned in the article:

Using 36 1-methyl-2-formyl-5-Y-substituted pyrrole derivatives I [Y = H, Me, Cl, cyano, MeCO, O₂N, HO₂C, MeS, MeO₂C, Me₃Si, Br, MeO; Z = O, NNHPh, NNHC₆H₄NO₂-4 (II)] as models for N-containing heterocyclic aromatic compounds, the K-band λ_max values of their UV spectra were measured. Correlation anal. of the ν_max values by a dual-parameter equation shows that the ν_max values of these compounds are affected, albeit to different degrees, by both the polar (σ^x) and spin-delocalization effects (σ^·) of the substituents. Interestingly, the UV spectra of II are mainly affected by the polar effects. The correlation results are in accord with a previous speculation that a higher degree of polarization of the substrate mol. would demand a higher degree of polar assistance from the substituent at the transition states. This study involved multiple reactions and reactants, such as 5-Formyl-1-methyl-1H-pyrrole-2-carbonitrile (cas: 81698-03-5Reference of 81698-03-5).

5-Formyl-1-methyl-1H-pyrrole-2-carbonitrile (cas: 81698-03-5) belongs to nitriles. There has been no report on the microbial biosynthesis of nitriles and the physiological function of such enzymes, nor was it not even known whether aliphatic and aromatic nitriles are biological compounds or just petrochemicals. Some nitriles are manufactured by heating carboxylic acids with ammonia in the presence of catalysts. This process is used to make nitriles from natural fats and oils, the products being used as softening agents in synthetic rubbers, plastics, and textiles and for making amines.Reference of 81698-03-5

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Molecular assembly of 1,3,5-tris(cyanomethyl) and 1,4-bis(cyanomethyl)arenes with silver triflate was written by Kilway, Kathleen V.;Deng, Shiping;Bowser, Sean;Mudd, Joseph;Washington, Laronda;Ho, Douglas M.. And the article was included in Pure and Applied Chemistry in 2006.Quality Control of 2,2′,2”-(2,4,6-Trimethylbenzene-1,3,5-triyl)triacetonitrile The following contents are mentioned in the article:

Dicyano- and tricyano-substituted aromatic angular building blocks were systematically complexed with silver triflate, and their structures were determined by single-crystal x-ray diffraction. The mol. assembly of 1,3,5-tris(cyanomethyl)-2,4,6-triethylbenzene with silver triflate from benzene resulted in a layered structure with distorted square pyramidal silver sites. The structure resulting from the complexation of 1,3,5-tris(cyanomethyl)-2,4,6-trimethylbenzene with silver triflate is dependent on the solvent of crystallization From benzene or toluene, reaction of 1,3,5-tris(cyanomethyl)-2,4,6-trimethylbenzene with silver triflate yielded a porous, channel-containing, solvated structure, but from acetone the resulting material was a network solid containing no solvent. Complexation of 1,4-bis(cyanomethyl)-2,3,5,6-tetraethylbenzene and 1,4-bis(cyanomethyl)-2,3,5,6-tetramethylbenzene with silver triflate resulted in network solids where the triflate anions were strongly coordinated to the silver. This study involved multiple reactions and reactants, such as 2,2′,2”-(2,4,6-Trimethylbenzene-1,3,5-triyl)triacetonitrile (cas: 16144-65-3Quality Control of 2,2′,2”-(2,4,6-Trimethylbenzene-1,3,5-triyl)triacetonitrile).

2,2′,2”-(2,4,6-Trimethylbenzene-1,3,5-triyl)triacetonitrile (cas: 16144-65-3) belongs to nitriles. The R-C-N bond angle in and nitrile is 180° which give a nitrile functional group a linear shape. Both the carbon and the nitrogen are sp hydridized which leaves them both with two p orbitals which overlap to form the two π bond in the triple bond. Nitriles are susceptible to hydrogenation over diverse metal catalysts. The reaction can afford either the primary amine (RCH2NH2) or the tertiary amine ((RCH2)3N), depending on conditions.Quality Control of 2,2′,2”-(2,4,6-Trimethylbenzene-1,3,5-triyl)triacetonitrile

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Comparison of the effect of N-methyl and N-aryl groups on the hydrolytic stability and electronic properties of betalain dyes was written by Pioli, Renan Moraes;Mattioli, Renan Rodini;Esteves, Larissa Cerrato;Dochev, Stefan;Bastos, Erick Leite. And the article was included in Dyes and Pigments in 2020.Quality Control of 4-((4-Methoxyphenyl)amino)benzonitrile The following contents are mentioned in the article:

Betalains are antioxidant secondary metabolites that emerged as safe color additives for food and cosmetics, fluorescent dyes, and redox mediators. Herein, we describe the semisynthesis of N-Me phenylbetalain (mepBeets) and N-aryl phenylbetalain (dipBeets) dyes and compare the effect of the structure on their hydrolytic stability and electronic properties. Eight model compounds were semisynthesized by coupling betalamic acid with either N-Me anilines or N-aryl anilines in Et acetate using p-toluenesulfonic acid as catalyst. The presence of electron-withdrawing substituents in the aryl moiety of mepBeets and dipBeets results in faster hydrolysis, lower anodic potentials and increased fluorescence quantum yields compared to the corresponding unsubstituted parent compounds The results are rationalized by considering the charge distribution in the 1,7-diazaheptamethinium chromophore and are useful for the development of new hydrolytically stable betalain dyes with tunable redox and optical properties. This study involved multiple reactions and reactants, such as 4-((4-Methoxyphenyl)amino)benzonitrile (cas: 319016-04-1Quality Control of 4-((4-Methoxyphenyl)amino)benzonitrile).

4-((4-Methoxyphenyl)amino)benzonitrile (cas: 319016-04-1) belongs to nitriles. The R-C-N bond angle in and nitrile is 180° which give a nitrile functional group a linear shape. Both the carbon and the nitrogen are sp hydridized which leaves them both with two p orbitals which overlap to form the two π bond in the triple bond. Industrially, the main methods for producing nitriles are ammoxidation and hydrocyanation. Both routes are green in the sense that they do not generate stoichiometric amounts of salts.Quality Control of 4-((4-Methoxyphenyl)amino)benzonitrile

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Template Oligomerization of DNA-Bound Cations Produces Calibrated Nanometric Particles was written by Blessing, Thomas;Remy, Jean-Serge;Behr, Jean-Paul. And the article was included in Journal of the American Chemical Society in 1998.SDS of cas: 194808-59-8 The following contents are mentioned in the article:

A general approach to the monomol. condensation of DNA into stable nano-metric particles is reported, which may be extended to the design of any kind of calibrated nano-metric particles required for material sciences. The process takes advantage of the low cooperativity of binding small monomeric counterions to a macromol. polyion, followed by a zipper-oligomerization reaction which “freezes” the resulting condensed particles. The DNA particles have a neg. surface charge which ensures colloid stability and in vivo diffusion, yet makes them unsuitable for carrying DNA into cells. Thus, C-sper-C [cysteine-spermine-cysteine (I)] was synthesized and mixed with plasmid DNA, which was found to enhance the thiol oxidation rates in the thiol/disulfide oligomerization, which resulted in condensation of the DNA into particles of mean size 50 ± 15 nm, which were stable ≥1 wk. The condensed particles were stable in electrophoresis conditions, but addition of excess dithiothreitol of raising the ionic concentration to physiol. levels converted the cationic polymer back to I. This study involved multiple reactions and reactants, such as Di-tert-butyl butane-1,4-diylbis((2-cyanoethyl)carbamatE) (cas: 194808-59-8SDS of cas: 194808-59-8).

Di-tert-butyl butane-1,4-diylbis((2-cyanoethyl)carbamatE) (cas: 194808-59-8) belongs to nitriles. Nitrile carbon shifts are in the range of 115–125 ppm whereas in isonitriles the shifts are around 155–165 ppm. In addition, Nitriles can react with alkynes, which leads to an increase in carbon chain length (carbocyanation).SDS of cas: 194808-59-8

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

A group of diphosphine-thiosemicarbazone complexes of palladium: Efficient precursors for catalytic C-C and C-N coupling reactions was written by Thapa, Kiran;Paul, Piyali;Bhattacharya, Samaresh. And the article was included in Inorganica Chimica Acta in 2019.Application of 319016-04-1 The following contents are mentioned in the article:

Reaction of 4-R-benzaldehyde thiosemicarbazone (denoted in general as HL-R; where H stands for the dissociable acidic proton and R (R = OCH₃, CH₃, H, Cl and NO₂) for the substituent) with [Pd(dppe)(EtOH)₂]²⁺, generated in situ via interaction of [Pd(dppe)Cl₂] (dppe = 1,2-bis(diphenylphosphino)ethane) with AgNO₃ in hot ethanol, in the presence of triethylamine affords a group of orange complexes of the type [Pd(dppe)(L-R)]NO₃. Structures of [Pd(dppe)Cl₂] and [Pd(dppe)(L-OCH₃)]NO₃ have been determined by X-ray crystallog. In the [Pd(dppe)(L-R)]NO₃ complexes, the thiosemicarbazone ligands are coordinated to the metal center as monoanionic bidentate N,S-donors forming five-membered chelate rings. The [Pd(dppe)(L-R)]NO₃ complexes show intense absorptions in the visible and UV regions, which have been analyzed by TDDFT calculations All the [Pd(dppe)(L-R)]NO₃ complexes are found to efficiently catalyze Suzuki-type C-C and Buchwald-type C-N coupling reactions. This study involved multiple reactions and reactants, such as 4-((4-Methoxyphenyl)amino)benzonitrile (cas: 319016-04-1Application of 319016-04-1).

4-((4-Methoxyphenyl)amino)benzonitrile (cas: 319016-04-1) belongs to nitriles. There has been no report on the microbial biosynthesis of nitriles and the physiological function of such enzymes, nor was it not even known whether aliphatic and aromatic nitriles are biological compounds or just petrochemicals. Asymmetric bioreduction of nitriles is an attractive route to produce optically active nitriles as current metal-catalyzed hydrogenations tend to have low reactivity.Application of 319016-04-1

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Amination with Pd-NHC Complexes: Rate and Computational Studies Involving Substituted Aniline Substrates was written by Hoi, Ka Hou;Calimsiz, Selcuk;Froese, Robert D. J.;Hopkinson, Alan C.;Organ, Michael G.. And the article was included in Chemistry – A European Journal in 2012.Application of 319016-04-1 The following contents are mentioned in the article:

The amination of aryl chlorides with various aniline derivatives using the N-heterocyclic carbene-based Pd complexes Pd-PEPPSI-IPr and Pd-PEPPSI-IPent (PEPPSI=pyridine, enhanced precatalyst, preparation, stabilization, and initiation; IPr=diisopropylphenylimidazolium derivative; IPent= diisopentylphenylimidazolium derivative) has been studied. Rate studies have shown a reliance on the aryl chloride to be electron poor, although oxidative addition is not rate limiting. Anilines couple best when they are electron rich, which would seem to discount deprotonation of the intermediate metal ammonium complex as being rate limiting in favor of reductive elimination. In previous studies with secondary amines using PEPPSI complexes, deprotonation was proposed to be the slow step in the cycle. These exptl. findings relating to mechanism were corroborated by computation. Pd-PEPPSI-IPr and the more hindered Pd-PEPPSI-IPent catalysts were used to couple deactivated aryl chlorides with electron poor anilines; while the IPr catalysis was sluggish, the IPent catalyst performed extremely well, again showing the high reactivity of this broadly useful catalyst. This study involved multiple reactions and reactants, such as 4-((4-Methoxyphenyl)amino)benzonitrile (cas: 319016-04-1Application of 319016-04-1).

4-((4-Methoxyphenyl)amino)benzonitrile (cas: 319016-04-1) belongs to nitriles. There has been no report on the microbial biosynthesis of nitriles and the physiological function of such enzymes, nor was it not even known whether aliphatic and aromatic nitriles are biological compounds or just petrochemicals. Alkyl nitriles are sufficiently acidic to undergo deprotonation of the C-H bond adjacent to the CN group.Strong bases are required, such as lithium diisopropylamide and butyl lithium. The product is referred to as a nitrile anion. Application of 319016-04-1

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts