Pd-Catalysed Suzuki coupling of α-bromoethenylphosphonates with organotrifluoroborates: a general protocol for the synthesis of terminal α-substituted vinylphosphonates
作者:Li Zhang、Yewen Fang、Xiaoping Jin、Housan Xu、Ruifeng Li、Hao Wu、Bin Chen、Yiming Zhu、Yi Yang、Zongming Tian
DOI:10.1039/c7ob02267k
日期:——
and robust protocol for the synthesis of terminal α-substituted vinylphosphonates via Suzuki coupling of α-bromovinylphosphonates with organotrifluoroborates has been successfully developed. This method features broad substrate scope, great functional group compatibilities, and easy scale-up ability. In addition to easy access of nucleophiles, straightforward synthesis of electrophiles was also realized
已经成功开发了通过α-溴乙烯基膦酸酯与有机三氟硼酸酯的Suzuki偶联合成末端α-取代的乙烯基膦酸酯的通用且鲁棒的方案。该方法具有广泛的底物范围,强大的官能团相容性和易于放大的能力。除了易于接近亲核试剂外,还以α-溴乙烯基膦酸二乙酯为起始原料,实现了亲电试剂的直接合成。使用Pd2(dba)3 / SPhos的组合作为催化剂,在温和条件下可以很好地获得一系列α-烷基,芳基,杂芳基和炔基取代的乙烯基膦酸酯。作为合成应用,末端乙烯基膦酸酯在可见光促进的吉斯反应中用作有效的迈克尔受体。