Synthesis of thioesters through copper-catalyzed coupling of aldehydes with thiols in water
作者:Chih-Lun Yi、Yu-Ting Huang、Chin-Fa Lee
DOI:10.1039/c3gc40946e
日期:——
Copper-catalyzed C–S bond formation between aldehydes and thiols in the presence of TBHP as an oxidant is described. Functional groups including chloro, trifluoromethyl, bromo, iodo, nitrile, ester and thiophene are all tolerated by the reaction conditions employed. This reaction is performed in water without the use of a surfactant. Both aryl and alkyl aldehydes couple suitably with aryl- and alkyl thiols, affording the corresponding thioesters in moderate to good yields.
Base-Induced Mechanistic Variation in Palladium-Catalyzed Carbonylation of Aryl Iodides
作者:Yanhe Hu、Jing Liu、Zhixin Lü、Xiancai Luo、Heng Zhang、Yu Lan、Aiwen Lei
DOI:10.1021/ja909962f
日期:2010.3.10
facile alkoxycarbonylation and thiocarbonylation. The ethoxycarbonylation of aryl iodides under room temperature and balloon pressure of CO in the presence of EtONa were examined, and good to high yields were obtained; the t-butoxycarbonylation reactions in the presence of t-BuONa were achieved, and the alkylthiocarbonylation (including the t-butylthiocarbonylation) of aryl iodides in the presence of sodium
Metal-free cross-coupling reaction of aldehydes with disulfides by using DTBP as an oxidant under solvent-free conditions
作者:Jing-Wen Zeng、Yi-Chen Liu、Ping-An Hsieh、Yu-Ting Huang、Chih-Lun Yi、Satpal Singh Badsara、Chin-Fa Lee
DOI:10.1039/c4gc00025k
日期:——
A DTBP-promoted C–H thiolation of aldehydes with disulfides under metal-free and solvent-free conditions is described. The system shows good functional group tolerance to afford thioesters in moderate to excellent yields.
simple and bench-stable carboxylic acids as a coupling partner. Herein, we present a 4-bromo pyridine–borane complex as a catalyst for the direct coupling of carboxylic acids with thiols. A wide range of thioesters with good functional group compatibility could be prepared via this metal-free approach. The merit of this strategy is exemplified by the modification of carboxylic acid-containing drugs.
Iron-Catalyzed Synthesis of Thioesters from Thiols and Aldehydes in Water
作者:Yu-Ting Huang、Shao-Yi Lu、Chih-Lun Yi、Chin-Fa Lee
DOI:10.1021/jo500574p
日期:2014.5.16
The preparation of thioesters through the iron-catalyzed coupling reaction of thiols with aldehydes is described. The reactions were carried out by using tert-butyl hydroperoxide (TBHP) as an oxidant and water as a solvent in most cases. This system is compatible with a variety of functional groups.