How to make a carbonylative coupling faster than the easier nucleophilicsubstitution? In this communication, a rhodium-catalyzed radical-based carbonylative coupling of alkyl halides with thiolphenols has been realized. Thioesters were isolated in good yields in general.
Manganese(<scp>iii</scp>)-promoted thiocarbonylation of alkylborates with disulfides: synthesis of aliphatic thioesters
作者:Bo Chen、Xiao-Feng Wu
DOI:10.1039/d1ob01960k
日期:——
A Mn(III)-promoted thiocarbonylation procedure toward the synthesis of thioesters has been developed. By employing easily available disulfides and potassium alkyltrifluoroborates as the starting materials, and cheap and non-toxic Mn(OAc)3·2H2O as the promotor, a broad range of thioesters were synthesized in good to excellent yields via radical intermediates.
已开发出一种用于合成硫酯的 Mn( III ) 促进的硫代羰基化过程。以易得的二硫化物和烷基三氟硼酸钾为起始原料,以廉价且无毒的Mn(OAc) 3 ·2H 2 O为促进剂,通过自由基中间体以良好至优异的产率合成了多种硫酯。
Synthesis of Thiol Esters Using PhSZnBr as Sulfenylating Agent: A DFT-Guided Optimization of Reaction Conditions
作者:Luca Sancineto、Caterina Tidei、Luana Bagnoli、Francesca Marini、Vito Lippolis、Massimiliano Arca、Eder João Lenardão、Claudio Santi
DOI:10.1002/ejoc.201600366
日期:2016.6
The use of PhSZnBr as sulfenylating agent in a solvent-free protocol to prepare thiolesters in excellent yields from acyl chlorides is reported. The products were efficiently obtained by grinding the neat reagents for 5 min in a mortar. DFT calculations showed that the coordination of solvent molecules to the metal center of PhSZnBr results in the destabilization of the frontier MOs, thus reducing