A metal‐free and direct alkene C−H cyanation is described. Directing groups are not required and the mechanism involves electrophilic activation of the alkene by a cyano iodine(III) species generated in situ from a [bis(trifluoroacetoxy)iodo]arene and trimethylsilyl cyanide as the cyanide source. This C−H functionalization can be conducted on gram scale, and for noncyclic 1,1‐ and 1,2‐disubstuted alkenes
3-(P-Biphenylyl)-butyronitrile and therapeutic compositions containing
申请人:BASF Aktiengesellschaft
公开号:US04011336A1
公开(公告)日:1977-03-08
3-(P-Biphenylyl)-butyronitrile, its production and its use as an antiphlogistic agent.
3-(P-联苯基)-丁腈,其生产及用作抗炎药剂。
Ni‐Catalyzed Cyanation of Allylic Alcohols with Formamide as the Cyano Source
作者:Lin‐Fang Deng、Jing Cheng、Jun‐Jia Chen、Luo Yang
DOI:10.1002/ejoc.202200339
日期:2022.7.7
Formamide as the safe cyanosource to replace toxic cyanide for the cyanation of unactivated allylicalcohols to provide various α,β-unsaturated nitriles was realized for the first time.
首次实现了甲酰胺作为安全氰源替代有毒氰化物的未活化烯丙醇氰化制备各种α,β-不饱和腈的方法。
US4011336A
申请人:——
公开号:US4011336A
公开(公告)日:1977-03-08
Photocatalytic <i>E</i> → <i>Z</i> Isomerization of Polarized Alkenes Inspired by the Visual Cycle: Mechanistic Dichotomy and Origin of Selectivity
作者:Jan B. Metternich、Denis G. Artiukhin、Mareike C. Holland、Maximilian von Bremen-Kühne、Johannes Neugebauer、Ryan Gilmour
DOI:10.1021/acs.joc.7b01281
日期:2017.10.6
(−)-riboflavin in the eyes of vertebrates to invert the intrinsic directionality of retinal isomerization. Herein, we extend this methodology to include a bioinspired, catalytic E → Z isomerization of α,β-unsaturated nitriles, thereby mimicking the intermediate Opsin-derived, protonated Schiff base in the visual cycle with simple polarized alkenes. Replacement of the iminium motif by a cyano group is well