硫醇的S-甲酰化是通过甲酸脱氢酶催化的酶促过程实现的,该酶将CO 2固定在底物上,这在调节活生物体的重要生物途径中起着至关重要的作用。通过化学方法实现这种反应性也可能是有利的,这将允许将CO 2固定在多种硫醇上。在这里,我们演示了在无金属条件下使用介离子N-杂环烯烃从CO 2制备S-甲酰硫醇的化学过程。该催化反应用于多样化从天然萜类化合物、脂肪醇、抗氧化剂和市售镇痛抗炎药物分子中获得的多种生物活性硫醇,以及13 C 标记的甲酰辅酶 A 的制备。此外,我们建立了在CO 2存在下完全无金属条件下合成乙烯基硫醚的一锅S-甲酰化-烯化工艺。总的来说,这项研究提供了一个将硫醇和CO 2转化为增值产品的平台。
Carbon Dioxide Mediated Stereoselective Copper-Catalyzed Reductive Coupling of Alkynes and Thiols
作者:Siti Nurhanna Riduan、Jackie Y. Ying、Yugen Zhang
DOI:10.1021/ol3003699
日期:2012.4.6
A simple protocol for the stereoselective copper-catalyzed hydrothiolation of alkynes under a CO2 atmosphere has been developed. The stereoselectivity is determined by the presence/absence of a CO2 atmosphere. The reaction system is robust and utilizes inexpensive, readily available substrates. A cyclic alkene/carboxylate copper complex intermediate is proposed as the key step in determining the stereoselectivity
Synthesis of Vinyl Sulfides by Copper-Catalyzed Decarboxylative C−S Cross-Coupling
作者:Sadananda Ranjit、Zhongyu Duan、Pengfei Zhang、Xiaogang Liu
DOI:10.1021/ol101729k
日期:2010.9.17
A novel method for the synthesis of vinyl sulfides by the decarboxylative cross-coupling of arylpropiolic acids with thiols using copper(I) salts as catalysts has been developed. In the presence of Cul and Cs2CO3, a variety of thiols reacted with arylpropiolic acids to afford the corresponding vinyl sulfides in good to excellent yields with high stereoselectivity for Z-isomers.