Synthesis 2017; 49(16): 3676-3685
DOI: 10.1055/s-0036-1589030
paper
© Georg Thieme Verlag Stuttgart · New York

Highly Regio- and Diastereoselective [3+2]-Annulation Reaction of Morita–Baylis–Hillman Carbonates with Pyrazolones Catalyzed by Tertiary Phosphines

Autoren

  • Weiping Zheng

    a   State Key Laboratory of Elemento-Organic Chemistry, Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, P. R. of China   eMail: miaozhiwei@nankai.edu.cn
    b   Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, P. R. of China
  • Yuming Li

    a   State Key Laboratory of Elemento-Organic Chemistry, Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, P. R. of China   eMail: miaozhiwei@nankai.edu.cn
  • Jiayong Zhang

    a   State Key Laboratory of Elemento-Organic Chemistry, Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, P. R. of China   eMail: miaozhiwei@nankai.edu.cn
  • Siyi Du

    a   State Key Laboratory of Elemento-Organic Chemistry, Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, P. R. of China   eMail: miaozhiwei@nankai.edu.cn
  • Zhiwei Miao  *

    a   State Key Laboratory of Elemento-Organic Chemistry, Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, P. R. of China   eMail: miaozhiwei@nankai.edu.cn
    b   Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, P. R. of China
    c   Collaborative Innovation Center of Chemical Science and Engineering (Tianjin, Tianjin 300071, P. R. of China

We thank the National Natural Science Foundation of China (21072102), the Committee of Science and Technology of Tianjin (15JCYBJC20700), and State Key Laboratory of Elemento-Organic Chemistry in Nankai University for financial support.
Weitere Informationen

Publikationsverlauf

Received: 15. März 2017

Accepted after revision: 17. April 2017

Publikationsdatum:
18. Mai 2017 (online)


Graphical Abstract

Abstract

A phosphine-catalyzed [3+2] annulation between N-phenylpyrazolone derivatives and Morita–Baylis–Hillman carbonates for the synthesis of chiral heterocyclic systems containing spiro[cyclopentane-3,3′-pyrazole] scaffolds has been developed. The reaction afforded the desired products in moderate to high yields (up to 97%) with good to excellent diastereoselectivities (up to 20:1). A plausible reaction mechanism has also been proposed based on previous literature.

Supporting Information