Synthesis 2017; 49(16): 3670-3675
DOI: 10.1055/s-0036-1589040
paper
© Georg Thieme Verlag Stuttgart · New York

Boronic Acid Catalysis for Aza-Piancatelli Rearrangement

Wu-Bang Tang ‡
State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. of China   eMail: wzheng@nju.edu.cn
,
Kou-Sen Cao ‡
State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. of China   eMail: wzheng@nju.edu.cn
,
Shan-Shui Meng
State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. of China   eMail: wzheng@nju.edu.cn
,
State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. of China   eMail: wzheng@nju.edu.cn
› Institutsangaben
Generous financial support from the National Natural Science Foundation of China (21202081), the Natural Science Foundation of Jiangsu Province (BK2012297), Research Fund for the Doctoral Program of Higher Education of China (20120091120026), and Nanjing University is gratefully acknowledged.
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Publikationsverlauf

Received: 17. April 2017

Accepted after revision: 05. Mai 2017

Publikationsdatum:
20. Juni 2017 (online)


These authors contributed equally to this work

Abstract

A first example of boronic acid catalyzed intermolecular aza-Piancatelli rearrangement to access a wide range of trans-4,5-disubstituted cyclopentenones is described. The catalytic system can also be extended to intramolecular aza-Piancatelli rearrangement to afford a wide range of azaspirocycles. Good to excellent yields were obtained in an excellent diastereoselective manner.

Supporting Information