Category: nitriles-buliding-blocks

Flores-Gaspar, Areli; Martin, Ruben published the artcile< Mechanistic Switch via Subtle Ligand Modulation: Palladium-Catalyzed Synthesis of α,β-Substituted Styrenes via C-H Bond Functionalization>, Recommanded Product: 2-(2-Bromo-5-fluorophenyl)acetonitrile, the main research area is palladium catalyst aldehyde bromophenylmethyl olefination; alkene aryl preparation.

A new catalyst system for the efficient use of aldehydes I [R1 = H, F, MeO, etc.; R2 = H, Cl, etc.; R3 = H, 3-HO, 3,5-Me2, etc.] for the synthesis of styrenes II via C-H bond functionalization and a subtle ligand modification is described. The high level of activity achieved allows to synthesize highly functionalized α,β-substituted styrenes, even the elusive E-configured trisubstituted olefins, in a regio- and stereoselective manner. Mechanistic experiments allowed to identify the corresponding synthetic intermediates.

Advanced Synthesis & Catalysis published new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 886761-96-2 belongs to class nitriles-buliding-blocks, and the molecular formula is C8H5BrFN, Recommanded Product: 2-(2-Bromo-5-fluorophenyl)acetonitrile.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Murakami, Teiichi; Otsuka, Masami; Ohno, Masaji published the artcile< An efficient synthesis of 5-diethoxymethylimidazole-4-carboxylate: a potential precursor for various imidazole derivatives>, Name: 2,2-Diethoxyacetonitrile, the main research area is ethoxymethylimidazolecarboxylate; imidazolecarboxylate diethoxymethyl; cycloaddition ethoxyacetonitrile methyl isocyanoacetate; nitrile cycloaddition methyl isocyanoacetate.

The title imidazolecarboxylate I [R = CH(OEt)2] was prepared in 82% yield by cycloaddition reaction of (EtO)2CHCN with CNCH2CO2Me in diglyme containing KH at 0-70° for 5 h. I [R = (MeO)3C, Ph, pyridyl, furyl] were similarly prepared in 13-85% yield.

Tetrahedron Letters published new progress about Cycloaddition reaction. 6136-93-2 belongs to class nitriles-buliding-blocks, and the molecular formula is C6H11NO2, Name: 2,2-Diethoxyacetonitrile.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Shi, Yongjia; Gao, Qian; Xu, Senmiao published the artcile< Chiral Bidentate Boryl Ligand Enabled Iridium-Catalyzed Enantioselective C(sp3)-H Borylation of Cyclopropanes>, Category: nitriles-buliding-blocks, the main research area is chiral bidentate boryl ligand preparation catalyst iridium borylation cyclopropane; cyclopropanecarboxamide preparation iridium catalyzed enantioselective borylation; crystal structure chiral boryl cyclopropanecarboxamide; mol structure chiral boryl cyclopropanecarboxamide; bioactive Levomilnacipran enantioselective preparation.

The authors herein report an Ir-catalyzed enantioselective C(sp3)-H borylation of cyclopropanecarboxamides using a chiral bidentate boryl ligand for the 1st time. A variety of substrates with α-quaternary C centers could be compatible in this reaction to provide β-borylated products with good to excellent enantioselectivities. Also the borylated products can be used as versatile precursors engaging in stereospecific transformations of C-B bonds, including the synthesis of a bioactive compound Levomilnacipran.

Journal of the American Chemical Society published new progress about Amides Role: PRP (Properties), RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation) (boryl cyclopropanecarboxamides). 658-99-1 belongs to class nitriles-buliding-blocks, and the molecular formula is C8H5F2N, Category: nitriles-buliding-blocks.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Yadav, Maruti B.; Jeong, Yeon Tae published the artcile< A one-pot ring-closure and ring-opening sequence for the cascade synthesis of dihydrofurofurans and functionalized furans>, COA of Formula: C9H6ClNO, the main research area is dihydrofurofuran furan preparation triethylamine catalyst; aromatic aliphatic glyoxal cyanoacetophenone three component ring closure opening.

Authors have developed a simple novel ring-closure and ring-opening pathway using an organo-base system for the synthesis of highly substituted dihydrofurofuran and furan frameworks via a triethylamine-catalyzed one-pot three-component reaction. The protocol involved a Knoevenagel and Michael adduct via Paal-Knorr cyclization with aromatic/aliphatic glyoxal and 2-cyanoacetophenone under mild and heating conditions with excellent yields through a simple filtration method. The merits of this methodol., including the use of easily available feedstocks and an inexpensive catalyst, Gram-scale synthesis, wide functional group tolerance, an open-air reaction setup, and no need for workup and column-chromatog. procedures, make the developed methodol. a practical way to access dihydrofurofurans and functionalized furans.

Organic & Biomolecular Chemistry published new progress about Acetophenones Role: RCT (Reactant), RACT (Reactant or Reagent) (cyano). 21667-62-9 belongs to class nitriles-buliding-blocks, and the molecular formula is C9H6ClNO, COA of Formula: C9H6ClNO.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Mettry, Magi; Moehlig, Melissa P.; Hooley, Richard J. published the artcile< Synthesis, Guest Binding, and Metal Coordination of Functionalized Self-Folding Deep Cavitands>, Quality Control of 6136-93-2, the main research area is cavitand self folding preparation guest binding metal coordination.

A simple method to introduce donor functions to the upper rim of self-folding benzimidazole-based deep cavitands is described. The upper rim donors allow controlled noncovalent binding of suitably sized guest species via both self-complementary hydrogen bonding and space-filling interactions; and metal-mediated self-folding is possible if bidentate coordinators are incorporated.

Organic Letters published new progress about Cavitands Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 6136-93-2 belongs to class nitriles-buliding-blocks, and the molecular formula is C6H11NO2, Quality Control of 6136-93-2.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Sheng, Hui-Yang; Chen, Hui; Liao, Meng; Peng, Na; Yang, Mian; Cai, Qun; Liu, Yi published the artcile< Copper-catalyzed Tandem Cyclization to Access 4-Aminoquinoline Derivatives>, SDS of cas: 38487-85-3, the main research area is nitroethenylaryl aminobenzonitrile copper catalyst tandem Michael heterocyclization oxidation; nitro arylquinolinamine preparation.

An efficient and practical method for the synthesis of 4-aminoquinoline derivativeswas developed via copper-catalyzed cascade cyclization of 2-aminobenzonitrile and nitroolefins. This reaction proceeded through a consecutive Michael addition/cyclization/oxidization protocol, providing 4-aminoquinolines with moderate to excellent yields under mild conditions. This method features readily available materials, one-pot one-step operation, and proceeded without bases.

Chemistry Letters published new progress about Alkenes, nitro Role: RCT (Reactant), RACT (Reactant or Reagent). 38487-85-3 belongs to class nitriles-buliding-blocks, and the molecular formula is C8H8N2O, SDS of cas: 38487-85-3.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Abou Elmaaty, Tarek; Elsisi, Hanan; Negm, Elham; Ayad, Seif; Sofan, Mamdouh published the artcile< Novel nano silica assisted synthesis of azo pyrazole for the sustainable dyeing and antimicrobial finishing of cotton fabrics in supercritical carbon dioxide>, Quality Control of 21667-62-9 , the main research area is nano silica azo pyrazole dye synthesis cotton fabric dyeing; disperse reactive dye supercritical carbon dioxide antimicrobial finishing.

A new protocol was developed for the synthesis of azo pyrazole derivatives via one-pot reaction of β-ketonitriles and Ph hydrazines in the presence of nano SiO2 as a mild catalyst. The synthesized dyes were elucidated using spectrophotometry, mainly NMR, FTIR, UV as well as elemental anal. The dyeing was carried out utilizing supercritical carbon dioxide as a green medium. Outstanding deep color shades and excellent dye fixation were exhibited by all new dyes. Furthermore, the dyed samples revealed superlative color fastness. The biol. evaluation of both the dyestuffs and the dyed samples showed overgrowing antimicrobial activity against the tested microorganisms. Therefore, our findings assured that disperse reactive dyes are the most com. appropriate materials for dyeing cotton in supercritical carbon dioxide.

Journal of Supercritical Fluids published new progress about Antimicrobial agents. 21667-62-9 belongs to class nitriles-buliding-blocks, and the molecular formula is C9H6ClNO, Quality Control of 21667-62-9 .

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Chiang, Ming-Chien; Tai, Tsui-Chen published the artcile< A quantitative relation between molecular structure and chemical reactivity. III. Addition reaction of aliphatic nitriles and methanol>, Formula: C6H11NO2, the main research area is .

The addition of MeOH to aliphatic nitriles with NaOMe as catalyst was studied. The % conversion of the nitriles plotted vs. the inductive index I for the alkyl groups in their mols. constitute a “”sigmoid”” curve, while the logs of the rate and equilibrium constants for the addition gave straight lines when plotted, resp., against the corresponding I. From the position of the point corresponding to 50% conversion on the sigmoid curve, it can be shown that the % conversion for all the aliphatic nitriles in this reaction would be very low and the reaction would proceed very slowly. α-Substituted (halogen, CO2H, CN) nitriles would undergo reaction very rapidly with very high % conversion. When the substituents are beyond the γ-position, however, the % conversion and the reaction rate would be very close to those of the simple aliphatic nitriles. The direction of turning of the sigmoid curve vs. % conversion and the direction of inclination of the straight lines vs. the rate and equilibrium constants demonstrate that this reaction is a nucleophilic addition of MeOH to aliphatic nitriles.

Huaxue Xuebao published new progress about Addition reaction. 6136-93-2 belongs to class nitriles-buliding-blocks, and the molecular formula is C6H11NO2, Formula: C6H11NO2.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Gore, Babasaheb Sopan; Kuo, Chiao-Ying; Garkhedkar, Amol Milind; Chang, Yu-Lun; Wang, Jeh-Jeng published the artcile< Metal-Free Solvent/Base-Switchable Divergent Synthesis of Multisubstituted Dihydrofurans>, Formula: C9H6ClNO, the main research area is ketonitrile cyclization; dihydropyran preparation.

A general protocol for the synthesis of multisubstituted 2,3-dihydrofuran-2-carbonitriles and 4,5-dihydrofuran-3-carbonitriles was demonstrated under a metal-free regime with the same oxidant, TBHP. By simply switching the reaction solvent and base, the reaction proceeds via two pathways. An unexpected -CN group migration rearrangement and hydroxylation have occurred in nonpolar and polar solvents, resp., under the reported conditions. Furthermore, the source of the hydroxyl group and hydrogen in the reaction is indirectly confirmed with isotope labeling studies.

Organic Letters published new progress about Crystal structure. 21667-62-9 belongs to class nitriles-buliding-blocks, and the molecular formula is C9H6ClNO, Formula: C9H6ClNO.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts

Meerwein, Hans; Hederich, Volker; Morschel, Hans; Wunderlich, Klaus published the artcile< Intermolecular anion transfer during organic reactions>, Formula: C6H11NO2, the main research area is .

A class of reaction mechanisms, RA + R’+ → R’A + R+, is considered, where R+ is the more stable carbonium ion, A = hydride, cyanide, or alkoxide; isolation of the R+ salts is attempted. Ph3C+ is chosen as R’+ and prepared by stirring 44.5 g. BF3-EtOAc, b13 49-51°, into 61 g. Ph3COEt in 170 cc. EtOAc with exclusion of H2O and alc., separation of Ph3CBF3 (I) by filtering after 24 hrs., and washing with low-boiling petroleum; total yield after recovery of 2nd crop 90%, m. 197-8°. Addition of 7.4 g. 1,3-dioxolane to 16.5 g. I in 60 cc. liquid SO2 under reflux (dry ice condenser) results in hydride transfer and, after evaporation and treatment with CH2Cl2 and Et2O, isolation of 88.5% 1,3-dioxolenium fluoborate, m. 83°; β-iodoethyl formate b15 65-70°, prepared with NaI in MeCN. From the CH2Cl2 washings, 58% Ph3CH, m. 90.5-1.5°, is isolated. Similarly, 2-methyl-1,3-dioxolane, the 2-Ph compound (II), and the 2,4,4,5,5-Me5 compound yield, resp., 84, 83, and 77% Ph3CH, and 69, 100, and 76% (m. 150-2°) dioxolenium fluoborates. In order to substitute for I the nonexistent Et +, 9.5 g. (Et3O) (BF4) and 9 g. II is heated to 40°, 81% Et2O distilled, and 50% II-BF4 salt and C2H6 isolated. Another H- donor is (PhCH2)3N, reacting with I in MeCN at 40-50° to yield 84% Ph3CH and 94% benzylidenedibenzylimonium fluoborate, m. 132-4°, hydrolyzed in hot 30% NaOH to (PhCH2)2NH. Cyanide transfer occurs by cooling 5 g. 2-cyano-2-methyl-1,3-dioxolane (III) in 25 cc. MeCN with 14.5 g. I, filtering off after 1 hr. 6.5 g. Ph3CCN, m. 128.6-29° (total yield 82%), and adding Et2O to isolate 59% 2-methyldioxolenium fluoborate (IV), m. 162-4°, and recover more Ph3CCN from the filtrate. III reacts with (EtO)2CHBF4, m. 20°, in CH2Cl2 to yield 88% IV and 81% (EtO)2CHCN, b760 163-4°, b15 58-9.5°, n20D 1.3978. Alkoxide transfer is reversible and usually more rapid than hydride transfer. Camphor diethyl acetal, b10 99.5-101°, (18 g.) added to 16.5 g. I in 25 cc. MeCN precipitates 95% O-ethylcamphoroxonium fluoborate, decomposed at 104-5%, isolated by washing with Et2O; 90% Ph3COEt (V), m. 82°, is obtained by evaporation of the filtrate. Similar high-yield reactions of ROEt with I or HC(OEt)2BF4 (VI) give the R salt and V or HC(OEt)3 for R = O.CH2.CH2.O.CMe (both I and VI), C(OEt)3 (both I and VI), O.CMe2.CMe2.O.CH (I only), O.CHMe.CHMe.O.CH (I only), HC(OEt)2 (Ph3CSbCl6), Me2NCHOEt [Ph3CSbCl6, VI, and HC(OEt)2SbCl6]. V is cleaved by R’BF4 (R’ = 2-methyl-, 4,5-dimethyl-, or 2,4,4,5,5-pentamethyldioxolenium) with isolation of Ph3CH and AcH. With ROEt (R = O.CH2.CH2.CH), I in CH2Cl2 yields 88% RBF4 and 95% Ph3CH, but in MeCN the same reaction produces 91% Ph3COCH2CH2COCPh3 (VII), m. 188-9° (MeCOEt), and by attack on O and ring cleavage, some RBF4, and VI. When not isolated, VII decompose to Ph3CH. RBF4 in turn reacts with V in MeCN to yield 33% VII, and VII with VI in CH2Cl2 to yield 75% RBF4. From 13.2 g. I in 20-25 cc. dry CH2Cl2, treated with 8.5 g. RNMe2 (R = O.CH2.CH2.O.CMe), b. 142°, with cooling and stirring 30 min. after slow addition, Et2O precipitates [RN(CPh3)Me2]BF4, stable, m. 170°; the iodide, obtained by treatment with NaI in MeCN, decompose at 110° to 88.5% AcNMe2, b30 76-7°, recovered by distillation, and 78.6% ICH2CH2OCPh3, m. 136-7°, obtained by crystallization of the residue from alc. or MeCN. The ether is obtained independently for comparison from Ph3CH and HO(CH2)2Br in C5H5N via the Br compound, m. 126-7%, and refluxing the latter with NaI in MeCN. The mechanisms are discussed. The new (OCMe2CMe2OCH)BF4 m. 110-12° and (Me2NCHOEt)SbCl6 m. 156-8°.

Annalen der Chemie, Justus Liebigs published new progress about Anions. 6136-93-2 belongs to class nitriles-buliding-blocks, and the molecular formula is C6H11NO2, Formula: C6H11NO2.

Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts