Synthesis of 1,1-Disubstituted Alkyl Vinyl Sulfides via Rhodium-Catalyzed Alkyne Hydrothiolation: Scope and Limitations
作者:Jun Yang、Anthony Sabarre、Lauren R. Fraser、Brian O. Patrick、Jennifer A. Love
DOI:10.1021/jo801644s
日期:2009.1.2
catalyst for alkyne hydrothiolation with alkyl thiols. In general, catalytichydrothiolation proceeds in high yields and with high regioselectivity for a wide range of alkynes and thiols. A variety of functional groups were well-tolerated, including nitriles, amines, halogens, ethers, esters and silanes, although strongly coordinating groups were found to be incompatible with hydrothiolation. Both sterically
Rhodium-Catalyzed Alkyne Hydrothiolation with Aromatic and Aliphatic Thiols
作者:Changsheng Cao、Lauren R. Fraser、Jennifer A. Love
DOI:10.1021/ja055096h
日期:2005.12.1
a potentially attractive method for the formation of vinylsulfides, which are valuable synthetic intermediates. Known methods for hydrothiolation using alkyl thiols are quite limited. We report herein that Tp*Rh(PPh3)2 (Tp* = hydrotris(3,5-dimethylpyrazolyl)borate) is a highly active catalyst for alkyne hydrothiolation with alkyl and aryl thiols. Hydrothiolation using alkyl thiols proceeds with excellent
PHOSPHOROUS PROTECTING GROUPS AND METHODS OF PREPARATION AND USE THEREOF
申请人:Agilent Technologies, Inc.
公开号:EP3137478B1
公开(公告)日:2021-09-22
Synthesis of 1,1-Disubstituted Olefins via Catalytic Alkyne Hydrothiolation/Kumada Cross-Coupling
作者:Anthony Sabarre、Jennifer Love
DOI:10.1021/ol8012843
日期:2008.9.18
Using recently developed methodology for the regioselective formation of branched alkyl vinyl sulfides, we report a convenient route to 1,1-disubstituted olefins. We demonstrate that n-propanethiol successfully undergoes catalytic alkyne hydrothiolation with both aryl and aliphatic alkynes using Tp*Rh(PPh3)2 as the catalyst. The resulting vinyl sulfides undergo Kumada cross-coupling to afford the desired
green procedure for the synthesis of Markovnikov i.e. branched vinyl sulfides in aqueous media was developed by employing the dinuclear Rh(I) complexes of hydrophilic phosphines as catalysts in the alkyne hydrothiolation with aliphatic thiols. Deuterium-labeling studies provide evidence for the aptness of these dinuclear catalysts to form selectively the Markovnikov syn-addition products. Catalyst order