Volume 52, Issue 33 pp. 8597-8601
Communication

Catalytic, Enantioselective, and Highly Chemoselective Bromocyclization of Olefinic Dicarbonyl Compounds

Yi Zhao

Yi Zhao

Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543 (Singapore) http://www.chemistry.nus.edu.sg/people/academic_staff/yeungyy.htm

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Dr. Xiaojian Jiang

Dr. Xiaojian Jiang

Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543 (Singapore) http://www.chemistry.nus.edu.sg/people/academic_staff/yeungyy.htm

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Prof. Dr. Ying-Yeung Yeung

Corresponding Author

Prof. Dr. Ying-Yeung Yeung

Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543 (Singapore) http://www.chemistry.nus.edu.sg/people/academic_staff/yeungyy.htm

Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543 (Singapore) http://www.chemistry.nus.edu.sg/people/academic_staff/yeungyy.htmSearch for more papers by this author
First published: 14 July 2013
Citations: 96

We thank the National University of Singapore (grant no. 143-000-509-112), ASTAR-Public Sector Funding (grant no. 143-000-536-305), and GSK-EDB for financial support. We are also grateful for scholarships to Y. Zhao and X. Jiang (NUS Research Scholarship). Special thanks goes to Dr. J. Chen (NUS) for her assistance on the mechanistic investigation and Dr. Ji’En Wu (CMMAC, NUS) for his help on the NMR analysis.

Graphical Abstract

Overriding preferences: An amine–thiocarbamate catalyst can mediate the facile, efficient, and highly enantioselective bromocyclization of olefinic 1,3-dicarbonyl compounds. In the presence of the bifunctional catalyst, the bromination occurs chemoselectively at the olefinic moiety rather than at the carbon atom in the α-position to the carbonyl units.

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