Visible-light-induced C–S bond formation in the synthesis of 2,4-disubstituted thiazoles through cascade difunctionalization of acetophenone: a greener approach
摘要:
A novel approach for the synthesis of 2,4-disubstituted thiazoles from methyl aryl ketones, N-bromo-succinimide (NBS), and thioamide in water as a green reaction medium through visible-light irradiation is reported.
A METHOD FOR PREPARING OPTICALLY ACTIVE CARBONYL COMPOUND
申请人:ZHEJIANG NHU COMPANY LTD.
公开号:US20180105477A1
公开(公告)日:2018-04-19
The present invention discloses a method for preparing optically active carbonyl compound, comprising the following steps: under the catalysis of chiral amine salt and transition metal catalysts, with hydrogen and catalytic amount of dihydropyridine compound as hydrogen source, use α, β-unsaturated aldehydes or α, β-unsaturated troponoid compounds to conduct asymmetric catalytic reaction to obtain the optically active carbonyl compound. This method comes in moderate reaction condition, simple operation, and catalytic amount of dihydropyridine compounds usage, the target product is easy to be separated and purified from the reaction system, and the metal catalyst can be recycled, it is economical.
Visible-light-induced C–S bond formation in the synthesis of 2,4-disubstituted thiazoles through cascade difunctionalization of acetophenone: a greener approach
A novel approach for the synthesis of 2,4-disubstituted thiazoles from methyl aryl ketones, N-bromo-succinimide (NBS), and thioamide in water as a green reaction medium through visible-light irradiation is reported.