TITLE:
Facile and Green Synthesis of α,β-Unsaturated Ketone Catalyzed by Air-Stable Organobismuth Complex
AUTHORS:
Renhua Qiu, Yimiao Qiu, Zhengong Meng, Xingxing Song, Zhenyong Jia, Shuangfeng Yin, Chak- Tong Au, Wai-Yeung Wong
KEYWORDS:
α, β-Unsaturated Ketone; Catalysis; Facile Seperation Catalytic System;Organobismuth; .Synthesis
JOURNAL NAME:
Advances in Materials Physics and Chemistry,
Vol.2 No.4B,
January
16,
2013
ABSTRACT: Air-stable cationic organobismuth complexes (2-5) possessing both acidic and basic characters were synthesized. The catalyst system that comprises an air-stable bifunctional Lewis acidic/basic organobismuth complex and [Bmim]BF4 showed high catalytic activity, diastereoselec-tivity, stability, and reusability in the one-pot synthesis of (E)-α,β-unsaturat-ed ketones through highly selective crossed-condensation of ketones and aldehydes. Through switching the reaction from homogeneous to heterogeneous, the system shows facile separation ability and facile reusability.