Microwave-assisted Synthesis of Thioesters from Aldehydes and Thiols in Water
作者:Huei-Shu Jhuang、Yi-Wei Liu、Daggula Mallikarjuna Reddy、Yong-Ze Tzeng、Wei-Yu Lin、Chin-Fa Lee
DOI:10.1002/jccs.201700045
日期:2018.1
We describe the synthesis of thioesters via copper‐ or iron‐catalyzed coupling of thiols with aldehydes on application of microwave irradiation. In this protocol, a variety of aliphatic and aromatic aldehydes and thiols were used, and the products were obtained in good to excellent yields.
coupling of readily available aroylhydrazides with disulfides is developed, in which oxidative expulsion of N2 overcomes the activation barrier between the carboxylic acidderivatives and the products. The reaction produces various thioesters in good to excellent yields with good functional group tolerance. In the reaction, stable and easily available aroylhydrazides are used as acyl sources and the
通过易得的芳酰肼与二硫化物的铜催化的氧化偶联,开发了另一种硫酯化反应,其中N 2的氧化排出克服了羧酸衍生物和产物之间的活化障碍。该反应以良好的收率和优异的官能度耐受性产生了各种硫酯。在该反应中,将稳定且容易获得的芳酰基酰肼用作酰基源,并将相对无味的二硫化物用作S源。机理研究表明,铜盐与氧化剂(NH 4)2 S 2 O 8的反应 可以实现串联过程,包括去质子化,自由基介导的脱氮和CS键形成。
Synthesis of Thiol Esters Using Nano CuO/Ionic Liquid as an Eco-Friendly Reductive System Under Microwave Irradiation
作者:Juliano B. Azeredo、Marcelo Godoi、Ricardo S. Schwab、Giancarlo V. Botteselle、Antonio L. Braga
DOI:10.1002/ejoc.201300295
日期:2013.8
We report an efficient, fast, and environmentally friendly method for the synthesis of a wide range of thiolesters using stable diorganoyl disulfides and acyl chlorides, using CuO nanoparticles and [pmim]Br as the reductive system. This method gave good to excellent isolated yields of the desired products after only three minutes of microwave irradiation. Furthermore, by using the same green approach
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.
Polymer supported Pd catalyzed thioester synthesis via carbonylation of aryl halides under phosphine free conditions
作者:Sk Manirul Islam、Rostam Ali Molla、Anupam Singha Roy、Kajari Ghosh
DOI:10.1039/c4ra03338h
日期:——
A new polymer anchored Pd(ii) complex has been synthesized and characterized. The catalytic performance of this complex has been tested for thioester synthesis via carbonylation of aryl halides and thiols under phosphine free conditions. This catalyst showed excellent catalytic activity and recyclability.