Visible-light-induced decarboxylative sulfonylation of cinnamic acids with sodium sulfinates by using Merrifield resin supported Rose Bengal as a catalyst
作者:Pinhua Li、Guan-Wu Wang
DOI:10.1039/c9ob00790c
日期:——
decarboxylative sulfonylation of cinnamic acids with sodium sulfinates for the synthesis of vinyl sulfones was developed. The reaction proceeded smoothly in the presence of Merrifield resin supported Rose Bengal ammonium salt as a photocatalyst and tert-butyl hydroperoxide (70% in water) as an oxidant in aqueous DMSO solution at roomtemperature under green LED (530-535 nm) irradiation under an air atmosphere
Decarboxylative cross-coupling reactions of cinnamic acids with sulfonylhydrazides were explored using oxygen as the sole terminal oxidant, realizing a conceptually novel technology for vinyl sulfone synthesis under the synergistic interactions of visible light irradiation, organic dye-type photocatalyst eosin Y, KI, and Cs2CO3 at room temperature.
以氧为唯一的末端氧化剂探索了肉桂酸与磺酰肼的脱羧交叉偶联反应,实现了在可见光照射,有机染料型曙红曙红Y,KI和Cs的协同作用下乙烯基砜合成的概念性新技术。在室温下为2 CO 3。
NAIDU, M. S. R.;REDDY, BHASKAR, D., INDIAN J. CHEM., 1982, 21, N 12, 1092-1094