An unexpected atom-economic tandem intermolecular hydrocarbonation and intramolecular hydrocarbonation (double hydrocarbonation sequence) of 2-trifluoromethyl-1,3-conjugated enynes with 1,3-dicarbonyl compounds leading to ring-trifluoromethylated cyclo-pentene frameworks by combination use of AgNO₃ as a catalyst and Et₃N as a base was developed. Enynes possessing electron-withdrawing aryl groups on the alkyne moiety are general good candidates for present transformation.

中文翻译：

---

银催化的2-三氟甲基-1,3-共轭炔烃与1,3-二羰基化合物的银催化双氢化反应：环三氟甲基化的环戊烯的合成

结合使用AgNO ₃作为2-三氟甲基-1,3-共轭烯与1,3-二羰基化合物的意想不到的原子经济串联分子间烃化和分子内烃化（双烃化序列），从而形成环三氟甲基化的环戊烯骨架开发了一种催化剂，并以Et ₃ N为碱。在炔烃部分上具有吸电子芳基的烯炔是目前转化的一般良好候选者。