Facile and Green Synthesis of α,β-Unsaturated Ketone Catalyzed by Air-Stable Organobismuth Complex

Renhua Qiu, Yimiao Qiu, Zhengong Meng, Xingxing Song, Zhenyong Jia, Shuangfeng Yin, Chak- Tong Au, Wai-Yeung Wong

Collenge of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P.R. China.
Department of Chemistry, Hong Kong Baptist Universtiy Hong Kong, China.
Department of Chemistry, Hong Kong Baptist Universtiy Hong Kong, China Wong.

DOI: 10.4236/ampc.2012.24B037                

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.

Keywords

α, β-Unsaturated Ketone; Catalysis; Facile Seperation Catalytic System;Organobismuth; .Synthesis

Conflicts of Interest

The authors declare no conflicts of interest.

References

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