Green and modular synthesis of azepino[4,3,2-cd]indoles and diazepino[6,5,4-cd]indoles via hydride transfer-involved cascade cyclization in ethanol

The modular synthesis of high-value azepino[4,3,2-cd]indole and its analogs from versatile synthons and readily available feedstocks has been a challenging project. Herein, we report the 1,6-hydride transfer-involved cascade [6 +...