Category: nitriles-buliding-blocks

Zhan, Yong published the artcileMechanofluorochromism based on BOPIM complexes: The effect of substituents and regulation of the direction of the emission color changes, Related Products of nitriles-buliding-blocks, the main research area is preparation boron pyridyl imidazole complex; crystal mol structure boron pyridyl imidazole complex; mechanofluorochromism boron pyridyl imidazole complex; thermal decomposition boron pyridyl imidazole complex.

Novel boron 2-(2′-pyridyl)imidazole (BOPIM) complexes T1, T2 and T3 with different substituents (including bromo, tert-Bu and methoxyl) on the benzene ring of BOPIM dyes were designed and synthesized, and their optical properties in both solution and the solid state were studied and compared. The three compounds exhibited typical intramol. charge transfer (ICT) characteristics. Solvent-dependent UV-visible absorption, fluorescence emission spectra and quantum chem. calculation indicated a mol. push-pull electronic structure. Their ICT degrees increased with the sequence of T1 < T2 < T3. The anal. of the x-ray crystal structure revealed the twisted mol. conformation of BOPIM dyes. Furthermore, they showed remarkable reversible mechanofluorochromic (MFC) features under mech. force. The MFC activities could be tuned easily by changing the substituents on the BOPIM dyes. T1 exhibited emission color change from bright green to yellowish green with a spectral red shift of only 22 nm under mech. stimuli, whereas T2 and T3 gave the large spectral red shifts of 36 and 30 nm. Electronic and steric effects of the substitutes were proved playing significant roles in regulating the ICT effect and intermol. interactions. More importantly, the remarkable effect of substituents on the MFC behaviors of BOPIM dyes will provide an effective way to obtain novel high-contrast MFC dyes. Dyes and Pigments published new progress about Crystal structure. 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, Related Products of nitriles-buliding-blocks.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Reshma, G. published the artcileSynthesis and structure of mono and bis {1,3-bis(2-pyridylimino)isoindoline} supported 3d transition metal complexes, Synthetic Route of 91-15-6, the main research area is mono bis pyridyliminoisoindoline transition metal complex preparation; crystal mol structure cobalt bis pyridyliminoisoindoline complex; manganese iron cobalt nickel copper zinc pyridyliminoisoindoline complex preparation.

Series of homoleptic and heteroleptic 3d transition metal complexes were prepared in anal. pure form and high yield, by reacting appropriate metal precursors with 1,3-bis(2-pyridylimino)isoindolate (BPIH) ligand under suitable reaction conditions. The complexes were characterized by various spectro-anal. techniques, including IR, UV, NMR, ESI Mass and x-ray crystal anal. A distorted octahedral structure containing two meridionally coordinating BPI ligands was assigned to all the homoleptic complexes. While, for the heteroleptic complexes, a highly distorted square pyramidal geometry, with a planar tridentate BPI ligand coordinating to the metal center along with chloro and aqua ligands was assigned. Considering the unique structural features of the complexes, potential catalytic applications are envisaged.

Journal of Molecular Structure published new progress about Crystal structure. 91-15-6 belongs to class nitriles-buliding-blocks, name is Phthalonitrile, and the molecular formula is C8H4N2, Synthetic Route of 91-15-6.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Rozhkova, Yuliya S. published the artcileSynthesis of novel racemic 3,4-dihydroferroceno[c]pyridines via the Ritter reaction, Related Products of nitriles-buliding-blocks, the main research area is dihydroferroceno pyridine preparation crystal mol structure; Ritter reaction methyl ferrocenylpropanol nitrile methansulfonic acid.

A new approach for the synthesis of functionalized racemic 3,4-dihydroferroceno[c]pyridines via the Ritter reaction of 2-methyl-1-ferrocenylpropan-1-ol with nitriles in the presence of methansulfonic acid was developed. The scope and limitations of the reaction were evaluated. Selected racemic 3,4-dihydroferroceno[c]pyridines were successfully separated by preparative HPLC on a Chiralcel OD-H column. The absolute configuration of the enantiomers was determined by x-ray crystal structure anal.

Tetrahedron Letters published new progress about Crystal structure. 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, Related Products of nitriles-buliding-blocks.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Rozhkova, Yuliya S. published the artcileSynthesis of novel racemic 3,4-dihydroferroceno[c]pyridines via the Ritter reaction, Safety of 2-Aminobenzonitrile(Flakes or Chunks), the main research area is dihydroferroceno pyridine preparation crystal mol structure; Ritter reaction methyl ferrocenylpropanol nitrile methansulfonic acid.

A new approach for the synthesis of functionalized racemic 3,4-dihydroferroceno[c]pyridines via the Ritter reaction of 2-methyl-1-ferrocenylpropan-1-ol with nitriles in the presence of methansulfonic acid was developed. The scope and limitations of the reaction were evaluated. Selected racemic 3,4-dihydroferroceno[c]pyridines were successfully separated by preparative HPLC on a Chiralcel OD-H column. The absolute configuration of the enantiomers was determined by x-ray crystal structure anal.

Tetrahedron Letters published new progress about Crystal structure. 1885-29-6 belongs to class nitriles-buliding-blocks, name is 2-Aminobenzonitrile(Flakes or Chunks), and the molecular formula is C7H6N2, Safety of 2-Aminobenzonitrile(Flakes or Chunks).

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Zhang, Xiao-Meng published the artcile4-(3-Fluoro-4-methoxyphenyl)-1-(4-methoxyphenyl)-5-(3,4,5-trimethoxyphenyl)-1H-imidazole, Application of a-Tosyl-(4-methoxybenzyl) isocyanide, the main research area is crystal structure fluoromethoxyphenylmethoxyphenyltrimethoxyphenylimidazole; mol structure fluoromethoxyphenylmethoxyphenyltrimethoxyphenylimidazole; imidazole fluoromethoxyphenylmethoxyphenyltrimethoxyphenyl crystal mol structure.

In 4-(3-fluoro-4-methoxyphenyl)-1-(4-methoxyphenyl)-5-(3,4,5-trimethoxyphenyl)-1H-imidazole, C26H25FN2O5, the fluoromethoxy-, methoxy- and trimethoxy-substituted benzene rings form dihedral angles of 12.65(2), 84.15(2) and 55.67(2)°, resp., with the imidazole ring. The crystal structure is stabilized weak intermol. C-H···F and C-H···O H bonds. Crystallog. data are given.

Acta Crystallographica, Section E: Structure Reports Online published new progress about Crystal structure. 263389-54-4 belongs to class nitriles-buliding-blocks, name is a-Tosyl-(4-methoxybenzyl) isocyanide, and the molecular formula is C16H15NO3S, Application of a-Tosyl-(4-methoxybenzyl) isocyanide.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Potikha, L. M. published the artcileCondensed isoquinolines. 22. Synthesis and properties of 6,11-dihydro-13H-isoquino[3,2-b]quinazolin-13-ones, Quality Control of 73217-11-5, the main research area is haloanthranilic acid heterocyclization bromomethylphenylacetonitrile; isoquinolinium bromide halophenyl preparation heterocyclization; isoquinoquinazolinone derivative preparation rearrangement.

The reaction of 3-haloanthranilic acids with [o-(bromomethyl)phenyl]acetonitrile gave 2-(2-carboxy-6-halophenyl)-1,4-dihydro-3(2H)-isoquinolinium bromides. (2-Chlorophenyl)isoquinolinium bromides are readily converted to 4-R-6,11-dihydro-13H-isoquino[3,2-b]quinazolin-13-ones, e.g., I, by heating >145°, but (2,4-dibromophenyl)isoquinolinium bromide only on fusing with anthranilic acid. The effect of the nature and position of substituents in the quinazoline fragment of 7,12-dihydro-5H-isoquino[2,3-a]quinazolin-5-ones, e.g., II, on the rate of rearrangement to 6,11-dihydro-13H-isoquino[3,2-b]quinazol-13-ones has been studied. The oxidation and borohydride reduction of 6,11-dihydro-13H-isoquino[3,2-b]quinazol-13-ones has been studied.

Chemistry of Heterocyclic Compounds (New York, NY, United States) published new progress about Heterocyclization. 73217-11-5 belongs to class nitriles-buliding-blocks, name is 2-(2-(Bromomethyl)phenyl)acetonitrile, and the molecular formula is C9H8BrN, Quality Control of 73217-11-5.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Qian, Wenyuan published the artcileAccelerating Effect of Triazolyl and Related Heteroaryl Substituents on SNAr Reactions: Evidence of Hydrogen-Bond Stabilized Transition States, Category: nitriles-buliding-blocks, the main research area is accelerating triazolyl heteroaryl SNAr hydrogen bond transition.

The remarkable accelerating effect of 1,2,3-triazolyl substituents on SNAr reactions was studied through systematic experiments and d. functional theory calculations The lone pair electrons of an ortho-triazolo substituent play a key role in lowering the activation energy for nucleophilic addition via formation of a preferential hydrogen bond with the amine nucleophile at the transition state for addition In an extension of this finding, related heteroaryl groups with similar electron pair donor properties also facilitate SNAr reactions. The exptl. determined solvent effect provides further support for this rationale, which was used to achieve an ortho-selective substitution on a difluoroarene substrate.

Journal of the American Chemical Society published new progress about Activation energy. 204078-32-0 belongs to class nitriles-buliding-blocks, name is 2-Morpholinobenzonitrile, and the molecular formula is C11H12N2O, Category: nitriles-buliding-blocks.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Gao, Zeng published the artcileBronsted Acid Catalyzed Cyclization of Inert N-Substituted Pyrroles to Benzo[ f ]pyrrolo[1,2-a][1,4]diazepines, HPLC of Formula: 1885-29-6, the main research area is benzopyrrolodiazepine preparation; substituted pyrrole tandem intramol dehydroxylation cyclization Bronsted Acid catalyzed; enantioselective preparation benzopyrrolodiazepine; pyrrolylphenyl methanamine chiral phosphoric acid catalyzed intermol addition.

Two approaches involving intramol. and intermol. cyclization, resp., were developed for the direct and practical construction of a series of important benzo[f]pyrrolo[1,2-a][1,4]azepines such as I [R = H, Me, Ph, etc.; R1 = H, Me, Cl] by using Bronsted acid catalysts. Upon catalysis by TsOH, the intramol. dehydroxylation/ring closure of 3-hydroxy-2-[2-(1 H-pyrrol-1-yl)benzyl]isoindolin-1-ones provided various racemic benzo[f]pyrrolo[1,2-a][1,4]azepines in high yields. Furthermore, enantioenriched benzo[f]pyrrolo[1,2-a][1,4]azepines II [R = H, Me; R1 = H, Cl; R2 = H, Cl, F] were also obtained by chiral phosphoric acid catalyzed intermol. addition of [2-(1 H-pyrrol-1-yl)phenyl]methanamines to 2-formylbenzoates under mild conditions.

Synlett published new progress about Addition reaction. 1885-29-6 belongs to class nitriles-buliding-blocks, name is 2-Aminobenzonitrile(Flakes or Chunks), and the molecular formula is C7H6N2, HPLC of Formula: 1885-29-6.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Long, Xiangdong published the artcileDirect Oxidative Amination of the Methyl C-H Bond in N-Heterocycles over Metal-Free Mesoporous Carbon, Synthetic Route of 100-70-9, the main research area is amide heterocyclic preparation density functional theory kinetic study; heterocycle oxidative amination mesoporous carbon catalyst SAR.

Herein, direct and efficient oxidative amination of the Me C-H bond in a wide range of N-heterocycles such as 2-methylpyridine, 3-methylquinoline, 4-methylpyrimidine, etc. to access the corresponding amides RC(O)NH2 (R = pyridin-2-yl, quinolin-2-yl, 1-methyl-1H-imidazol-2-yl, etc.) over metal-free porous carbon is successfully developed. To understand the fundamental structure-activity relationships of carbon catalysts, the surface functional groups and the graphitization degree of porous carbon have been purposefully tailored through doping with nitrogen or phosphorus. The results of characterization, kinetic studies, liquid-phase adsorption experiments, and theor. calculations indicate that the high activity of the carbon catalyst is attributed to the synergistic effect of surface acidic functional groups (hydroxyl/carboxylic acid/phosphate) and more graphene edge structures exposed on the surface of carbon materials with a high graphitization degree, in which the role of acidic functional groups is to adsorb the substrate mol. and the role of the graphene edge structure is to activate O2.

ACS Catalysis published new progress about Adsorption energy. 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, Synthetic Route of 100-70-9.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Levay, Krisztina published the artcileTuning the chemoselectivity of the Pd-catalyzed hydrogenation of pyridinecarbonitriles: an efficient and simple method for preparing pyridyl- or piperidylmethylamines, Synthetic Route of 100-70-9, the main research area is pyridinecarbonitrile palladium catalyst hydrogenation; pyridylmethylamine chemoselective preparation; piperidylmethylamine chemoselective preparation.

An effective method for the chemoselective, liquid-phase heterogeneous catalytic hydrogenation of some pyridinecarbonitriles [4-, 3- or 2-pyridinecarbonitrile] to the corresponding pyridyl- or piperidylmethylamines over a Pd/C catalyst was developed. Using our process, not only could an adequate primary amine selectivity to the desired pyridine derivatives [4-, 3- or 2-(aminomethyl)pyridine] be achieved, but it had also been proved to be effective for the selective preparation of piperidylmethylamines [4-, 3- or 2-(aminomethyl)piperidine] by further hydrogenation of the pyridine ring in addition to the nitrile group. The essence of this method was that the synthesis could be fine-tuned by simply adjusting the amount of acidic additive (H2SO4) based on whether the product to be prepared was pyridyl- or piperidylmethylamine. Complete conversions were obtained under mild conditions (30-50°C, 6 bar), in all cases, but the very high selectivity to 2-(aminomethyl)piperidine or 2-(aminomethyl)pyridine (98 and 93%, resp.) decreased to 76% (3-(aminomethyl)piperidine) and 72% (3-(aminomethyl)pyridine), as well as 10% (2-(aminomethyl)piperidine) and 57% (2-(aminomethyl)pyridine) by changing the position of the nitrile group in the pyridine ring. The possible reasons for the diversed primary amine selectivities observed in the hydrogenation of the constitutional isomers of pyridinecarbonitriles were confirmed by quantum chem. calculations (DFT). Adsorption energy profiles regarding the interactions between the nitrile starting materials, imine intermediates or amine products and palladium were computed to clarify the selectivity changes.

Catalysis Science & Technology published new progress about Adsorption energy. 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, Synthetic Route of 100-70-9.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts