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.
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.
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.
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.
systems. This study demonstrated a heterogeneously catalyzed system for the decarbonylation of various aryl thioesters to produce thioethers and CO by utilizing CeO2- or hydroxyapatite-supported Ni, Pd, or Rh nanoparticlecatalysts. The Ni catalysts showed high catalytic activity, while the Pdcatalysts possessed excellent functional group tolerance. The Rh catalysts were suitable for the selective decarbonylation
使用均相金属催化剂对硫酯脱羰进行了积极的研究,作为合成硫醚的一种有吸引力的方法,硫醚广泛应用于各个领域,因为脱羰理想情况下不需要添加剂,并且产生CO作为唯一的理论副产物。然而,尽管硫酯的非均相催化脱羰对于构建环境友好且实用的催化体系具有重要意义,但迄今为止尚未见报道。本研究展示了一种利用 CeO 2或羟基磷灰石负载的 Ni、Pd 或 Rh 纳米颗粒催化剂对各种芳基硫酯进行脱羰以生产硫醚和 CO 的非均相催化系统。 Ni催化剂表现出较高的催化活性,而Pd催化剂则具有优异的官能团耐受性。 Rh催化剂适用于不对称取代硫酯的选择性脱羰。