Pd-Catalyzed decarboxylative alkynylation of alkynyl carboxylic acids with arylsulfonyl hydrazides<i>via</i>a desulfinative process
作者:Sheng Chang、Ying Liu、Shu Zhu Yin、Lin Lin Dong、Jian Feng Wang
DOI:10.1039/c8nj02964d
日期:——
In the presence of a Pd(II)/P-ligand catalytic system, decarboxylative alkynylation of alkynyl carboxylicacids and arylsulfonyl hydrazides by desulfinative coupling could provide aryl alkynes in satisfactory yields by either judiciously selecting palladium catalysts or modulating phosphine ligands under mild conditions. The reported coupling reactions are very practical as they do not require the
Microwave-assisted and catalyst-free sulfenylation of imidazo[2,1-<i>b</i>]thiazoles with sulfonyl hydrazides in water
作者:Shaohua Wang、Run Luo、Lina Guo、Tianxi Zhu、Xu Chen、Wenjie Liu
DOI:10.1080/10426507.2020.1768537
日期:2020.10.2
Abstract An efficient microwave-assisted and catalyst-free sulfenylation of imidazo[2,1-b]thiazoles with sulfonyl hydrazides has been developed in water. This method is practical and environmental friendly, and can be performed within a short reaction time. The sulfenylation reaction shows high regioselectivity, and excellent functional-group compatibility, giving the desired products in moderate to