|
|||||
|
|
N‐Heterocyclic Carbene (NHC)‐Catalyzed/Lewis Acid Mediated Conjugate Umpolung of Alkynyl Aldehydes for the Synthesis of Butenolides: A Formal [3+2] Annulation |
|
| Authors: | Jing Qi Dr Xingang Xie Runfeng Han Donghui Ma Juan Yang Prof?Dr Xuegong She |
| Institution: | 1. State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu, 730000 (P.R. China), Fax: (+86)?931‐8912582;2. State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of sciences, Lanzhou, Gansu, 730000 (P.R. China) |
| Abstract: | |
| Keywords: | allenolates Lewis acids N‐heterocyclic carbenes organocatalysis umpolung |