PPh<sub>3</sub>‑Mediated Cascade Reaction of 2‑Alkynylnitrobenzenes and Thioureas for the Construction of Imidazo[4,5‑<i>b</i>]indole-2-thiones
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A simple method for the preparation of imidazo[4,5-b]indole-2-thiones from 2-alkynylnitrobenzenes and thioureas is described. In the reaction, a Wittig-like process was triggered by PPh3 and followed by a cyclization step. The products were afforded in yields of 70–98% under mild conditions. Additionally, the 2-alkynylnitrobenzenes were stable and could be prepared via a simple coupling step.
创建时间：
2023-02-17
