Synthesis of substituted 2-alkylquinolines by visible-light photoredox catalysis
作者:Yousheng Mei、Jie Liu、Lei Wang、Pinhua Li
DOI:10.1039/c9ob02259g
日期:——
The condensation of anilines and alkenyl ethers has been demonstrated by employing visible-lightphotoredoxcatalysis. The resulting method enables the synthesis of substituted 2-alkylquinolines under mild and simple conditions with good substrate scope and high yields.
A three‐component cyclization of 2‐methylquinolines, trimethylsilyl cyanide, and alkylamines or α‐amino acids mediated by CuSO4 was developed. By employing oxygen as the clean oxidant, cyanated imidazo[1,5‐a]quinolines were constructed with high efficiency for the first time. The loading of CuSO4 could be lowered to 20 mol% with a slightly diminished yield. The synthetic utility of this method is further