Iron-Catalyzed Cadiot–Chodkiewicz Coupling with High Selectivity in Water under Air
作者:Yi-An Liao、Wen-Sheng Peng、Ling-Jun Liu、Ting-You Ye、Jun-Hao Fu、Yi-Tsu Chan、Fu-Yu Tsai
DOI:10.1021/acs.joc.2c01354
日期:2022.11.4
An iron-based catalytic system was developed for the cross-coupling of 1-bromoalkynes with terminal alkynes to selectively generate unsymmetrical 1,3-butadiynes in water under air. It was found that a combination of 1-bromoalkynes derived from less acidic terminal alkynes with more acidic counterparts would greatly enhance yields and selectivity for unsymmetrical 1,3-butadiynes. The reaction was also
开发了一种铁基催化体系,用于 1-溴炔烃与末端炔烃的交叉偶联,从而在空气中选择性地在水中生成不对称的 1,3-丁二炔。发现由酸性较低的末端炔烃衍生的 1-溴炔烃与酸性较强的对应物的组合将大大提高不对称 1,3-丁二炔的产率和选择性。该反应还适用于通过一锅法偶联1-溴炔烃和三甲基甲硅烷基保护的1,3-丁二炔来合成不对称的1,3,5-己三炔。