Copper-catalyzed highly selective direct hydrosulfonylation of alkynes with arylsulfinic acids leading to vinyl sulfones
作者:Wei Wei、Jinli Li、Daoshan Yang、Jiangwei Wen、Yueting Jiao、Jinmao You、Hua Wang
DOI:10.1039/c3ob42522c
日期:——
Copper-catalyzed direct hydrosulfonylation of alkynes with arylsulfinic acids for the synthesis of (E)-vinyl sulfones has been developed with 100% atom efficiency.
铜催化的炔烃与芳基亚砜酸直接进行烷基化反应,用于合成(E)-乙烯基亚砜,原子效率达到100%。
γ-Lactone Formation in the Addition of Benzenesulfonyl Bromide to Diene and Enyne Esters
作者:Chen Wang、Glen A. Russell
DOI:10.1021/jo982388a
日期:1999.3.1
The gem-dialkyl effect has been used to promote the formation of functionalized gamma-lactones in the addition of benzenesulfonyl bromide to diene and enyne esters. Introduction of 3 mol % of pyridine into the reactions increases the yields of lactones produced from tertiary esters. Formation of the C-alpha-C-beta bond of gamma-lactones has been achieved in both C-alpha-->C beta and C-beta-->C-alpha radical cyclization directions.
Regiodivergent Synthesis of 1- and 2-Arylsulfonyl 1,3-Dienes
作者:Carissa S. Hampton、Michael Harmata
DOI:10.1021/ol500259m
日期:2014.2.21
In the course of a study of the alkoxyallylation of allenic sulfones through the use of π-allylpalladium chemistry, we discovered an isomerization of allenic sulfones to arylsulfonyl 1,3-dienes. Under conditions of palladium catalysis in the presence of acids such as acetic acid, allenic sulfones are converted to 1-arylsulfonyl 1,3-dienes. On the other hand, nucleophilic catalysis using triphenylphosphine