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R. Qiu, Y. Qiu, S. Yin, X. Song, Z. Meng, X. Xu, X. Zhang, S. Luo, C.-T. Au, W.-Y. Wong, “Facile separation catalyst system: direct diastereoselective synthesis of (E)-α, β-unsaturated ketones catalyzed by an air-stable Lewis acidic/basic bifunctional organobismuth complex in ionic liquids,” Green Chem., vol. 12, pp.1767-1771, 2010.

has been cited by the following article:

• 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.