An interesting and highly selective gold‐catalyzed cycloisomerization of 2‐aryl‐2‐(arylamino)‐3‐butyn‐1‐ols to afford 2‐(2′‐aminoaryl)‐2,5‐dihydrofurans has been reported. The reaction is atom economic and highly efficient, and tolerates many functional groups including the cyano and allyl groups. A plausible mechanism for this new cycloismerization is also proposed.

中文翻译：

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金催化2-芳基-2-（芳基氨基）-3-丁炔-1-醇向2-（2'-氨基芳基）-2,5-二氢呋喃的环异构化

据报道，有趣的，高选择性的金催化的2-芳基-2-（芳基氨基）-3-丁炔-1-醇的环异构化反应可得到2-（2'-氨基芳基）-2,5-二氢呋喃。该反应是原子经济且高效的，并且可耐受许多官能团，包括氰基和烯丙基。还提出了这种新的环加成环的合理机制。