To synthesize sulfur-containing π-conjugated polymers, reaction conditions for rhodium-catalyzed hydrothiolation of terminal alkynes with arenethiols are optimized in detail. Under the optimized conditions, rhodium-catalyzed hydrothiolation of terminal alkynes proceeds regio- and stereoselectively to afford the corresponding vinyl sulfides via an anti-Markovnikov and syn-addition process. Then, the rhodium-catalyzed hydrothiolation is applied to polymerization of 2,5-diethynylthiophene with benzene-1,4-dithiol, which successfully provides sulfur-containing π-conjugated polymers with excellent regio- and stereoselectivities.
为了合成含
硫π共轭聚合物,我们详细优化了
铑催化末端
炔烃与壬
硫醇氢
硫化反应的条件。在优化的条件下,
铑催化的末端
炔烃氢
硫化反应可通过反马尔科夫尼科夫和同步加成过程进行区域和立体选择性反应,生成相应的
乙烯基硫化物。然后,将
铑催化的氢
硫化反应应用于 2,5- 二
乙炔基
噻吩与苯-1,4-二
硫醇的聚合反应,成功地制备出了具有优异的区域和立体选择性的含
硫 π 共轭聚合物。