Nucleophilic Addition of Highly Hindered Amines to Electron-Deficient Acetylenes
作者:Sergio Cossu、Ottorino De Lucchi、Richard Durr
DOI:10.1080/00397919608004784
日期:1996.12
Abstract Even the most highly hindered amines such as diisopropylamine, isopropyl-t-butylamine, 2,2,6,6-tetramethylpiperidine, 4-oxo-2,2,6,6-tetramethyl piperidine and hexamethyldisilazane react with electron-deficient alkynes to give the Michael addition products.
Visible light-mediated dehydrogenative β-arylsulfonylation of tertiary aliphatic amines with arylsulfonyl chlorides
作者:Min Chen、Zhi-Tang Huang、Qi-Yu Zheng
DOI:10.1039/c4ob01713g
日期:——
The novel synthesis of β-arylsulfonyl enamines has been achieved by visible light-mediated dehydrogenative arylsulfonylation of tertiaryaliphaticamines with arylsulfonyl chlorides in moderate yield.
Visible-light-induced dehydrogenative sulfonylation of tertiary amines under transition-metal- and photocatalyst-free conditions
作者:Jinwen Tong、Heng Li、Yan Zhu、Ping Liu、Peipei Sun
DOI:10.1039/d1gc04703e
日期:——
An efficient dehydrogenative sulfonylation of tertiary amines with thiosulfonates enabled by visible-light irradiation is developed. This protocol allows for the construction of a variety of cyclic and acyclic β-sulfonyl enamines under transition-metal-free, external oxidant-free, photocatalyst-free and mild reaction conditions.