1823-91-2Relevant articles and documents
Synthesis of alkylaryl-and diarylnitriles from ketones via N-(1- arylalkylidene)-cyanomethyl amines
Selva, Maurizio,Bomben, Andrea,Tundo, Pietro
, p. 1561 - 1569 (1999)
Alkylaryl- and diarylketones (Arcor; R= alkyl, aryl, 1) can be converted into nitriles [ArCH(CN)R, 2] containing an additional carbon atom through a base-promoted reaction of N-(1-arylalkylidene)-cyanomethyl amines [ArC(=NCH2CN)R, 3].
Iridium-catalyzed selective C-C bond cleavage of nitriles and ketones
Terai, Hiroki,Takaya, Hikaru,Murahashi, Shun-Ichi
, p. 2185 - 2187 (2004)
Selective and catalytic C-C bond cleavage of pentanedinitriles and 5-oxohexanenitriles can be performed in the presence of iridium hydride complex IrH5(Pi-Pr3)2 (1). The key steps of this reaction are α-C-H activation of t
Lewis acid controlled regioselectivity in styrene hydrocyanation
Bini, Laura,Pidko, Evgeny A.,Mueller, Christian,Van Santen, Rutger A.,Vogt, Dieter
, p. 8768 - 8778 (2009)
According to present knowledge, the Ni-catalyzed hydrocyanation of styrene leads predominantly to the branched product 2-phenylpropionitrile (98%). We observed a dramatic inversion of the regioselectivity upon addition of a Lewis acid. Up to 83 % of the l
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Baldinger,Nieuwland
, p. 2851 (1933)
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Cyanide-free enantioselective synthesis of nitriles: Synthetic proof of a biocatalytic concept and mechanistic insights
Metzner, Richard,Okazaki, Seiji,Asano, Yasuhisa,Gr?ger, Harald
, p. 3105 - 3109 (2014)
The first ( by definition ) cyanide-free enantioselective synthetic approach towards chiral α - and β -branched nitriles is reported. This process is based on a biocatalytic dehydration of racemic aldoximes by using an aldoxime dehydratase and proceeds with high conversion and excellent enantioselectivity (up to 98% ee) with water as the only side-product when starting from a racemic substrate with a high E/Z ratio. Thus, in combination with the facile generation of aldoximes through condensation of readily accessible aldehydes with hydroxylamine, this methodology offers an attractive and efficient path to chiral nitriles with excellent atom economy in aqueous solution. Furthermore, this study shows a surprising enzymatic dependency of the enantiopreference on the E or Z configuration of the aldoxime moiety. Notably, the whole stereochemical course of this enzymatic reaction has been rationalized by means of a computational study.
Nickel/Cobalt-Catalyzed Reductive Hydrocyanation of Alkynes with Formamide as the Cyano Source, Dehydrant, Reductant, and Solvent
Zhang, Jin,Luo, Cui-Ping,Yang, Luo
supporting information, p. 283 - 288 (2020/12/01)
A Ni/Co co-catalyzed reductive hydrocyanation of various alkynes was developed for the production of saturated nitriles. Hydrocyanic acid is generated in situ from safe and readily available formamide. Formamide played multiple roles as a cyano source, dehydrant, and reductant for the NiII pre-catalyst and vinyl nitriles, along with acting as the co-solvent in this reaction. Detailed mechanistic investigation supported a pathway via hydrocyanation of C≡C bond and the subsequent reduction of C=C bond. Wide substrate scope, the employment of a cheap and stable nickel salt as pre-catalyst, a safe cyano source and convenient experimental operation render this hydrocyanation practical for the laboratory synthesis of saturated nitriles. (Figure presented.).
Enantiomer Separation of Nitriles and Epoxides by Crystallization with Chiral Organic Salts: Chirality Switching Modulated by Achiral Acids
Hirose, Takuji,Kodama, Koichi,Shimomura, Yuki
, p. 6552 - 6557 (2021/11/16)
Enantiomer separation of nitriles and epoxides by inclusion crystal formation with organic-salt type chiral hosts was achieved. The stereochemistry of the preferentially included nitrile could be switched only by changing the achiral carboxylic acid component. Crystallographic analysis of the inclusion crystals reveals that the hydrogen-bonding networks are controlled by the acidity of the phenol group of the acids, which results in chirality switching.