Direct Alkynylation of Thiophenes: Cooperative Activation of TIPS-EBX with Gold and Brønsted Acids
作者:Jonathan P. Brand、Jérôme Waser
DOI:10.1002/anie.201003179
日期:——
United we stand! Cooperative activation of the hypervalent‐iodine reagent TIPS‐EBX with a gold catalyst and a Brønsted acid allowed the first direct ethynylation of thiophenes at room temperature (see scheme; TFA=trifluoroacetic acid). The obtained ethynylthiophenes are important building blocks for organic dyes and electronic materials.
团结就是力量!高价
碘试剂
TIPS-EBX与
金催化剂和布朗斯台德酸的协同活化使
噻吩在室温下首次直接
乙炔化(参见方案; TFA =
三氟乙酸)。所获得的
乙炔基
噻吩是有机
染料和电子材料的重要组成部分。