Alkylation via tris(dialkylamino)sulfonium enolates
作者:R. Noyori、I. Nishida、J. Sakata
DOI:10.1016/s0040-4039(00)71493-6
日期:1980.1
Tris(dialkylamino)sulfoniumenolates generated from tris(diethylamino)sulfonium difluorotrimethylsiliconate and enol silyl ethers are readily alkylated by various alkyl halides under mild conditions.
Intramolecular Palladium-Catalyzed Direct Arylation of Alkenyl Triflates
作者:Ana C. F. Cruz、Neil D. Miller、Michael C. Willis
DOI:10.1021/ol702044z
日期:2007.10.1
A catalyst generated from Pd(OAc)2 and dppp is effective for the direct intramolecular arylation of alkenyl triflates. Conjugated alkene-arene-containing carbocycles are produced in good yield. The process tolerates a variety of aryl substituents as well a simple heteroaryl groups. Electron-deficient aryl rings deliver faster reactions.
Lithium naphthalenide induced reductive alkylation of α-cyano ketones. A general method for regiocontrol of α, α-dialkylation of ketones
作者:Hsing-Jang Liu、Jia-Liang Zhu、Kak-Shan Shia
DOI:10.1016/s0040-4039(98)00780-1
日期:1998.6
An efficient generalmethod for the consecutive introduction of two alkyl groups to the α carbon of a ketone carbonyl has been developed, making use of the lithium naphthalenide induced reductive alkylation of an α-cyano ketone system as a key operation.
Building Congested Ketone: Substituted Hantzsch Ester and Nitrile as Alkylation Reagents in Photoredox Catalysis
作者:Wenxin Chen、Zheng Liu、Jiaqi Tian、Jin Li、Jing Ma、Xu Cheng、Guigen Li
DOI:10.1021/jacs.6b06379
日期:2016.9.28
For the first time, 4-alkyl Hantzsch esters were used to construct molecules with all-carbon quaternary centers by visible light-induced photoredox catalysis via transfer alkylation. Up to a 1500 h(-1) turnover frequency was achieved in this reaction. Reactions of 4-alkyl Hantzsch nitriles as tertiary radical donors joined two contiguous all-carbon quaternary centers intermolecularly, and this chemistry