Wen-Bo Shen, Bo Zhou, Zhi-Xin Zhang, Han Yuan, Wei Fang and Long-Wu Ye
Org. Chem. Front., 2018,5, 2468-2472
DOI:
10.1039/C8QO00552D,
Research Article
A new gold-catalyzed cascade cyclization of N-propargyl ynamides involving a presumable vinyl cation intermediate has been developed, which allows the efficient and practical synthesis of various functionalized indeno[1,2-c]pyrroles in moderate to good yields under mild reaction conditions. Importantly, an unusual regioselective cyclization on the β-carbon of the ynamide was observed in such a gold-catalyzed alkyne–ynamide cyclization.