Efficient Synthesis of 4,7-Dihydro-1H-oxepino[2,3-c]pyrazoles by Potassium Carbonate Promoted [4+3] Annulation of Crotonate-Derived Sulfur Ylides with Benzylidenepyrazolones-Reference-Cited by-同舟云学术

Efficient Synthesis of 4,7-Dihydro-1H-oxepino[2,3-c]pyrazoles by Potassium Carbonate Promoted [4+3] Annulation of Crotonate-Derived Sulfur Ylides with Benzylidenepyrazolones

Published:2019-02-19 Issue:10 Volume:51 Page:2149-2156
ISSN:0039-7881
Container-title:Synthesis
language:en
Short-container-title:Synthesis

Author:

Wang Dian¹,Wang Xue¹,Zhang Xuange¹,Miao Zhiwei¹²^ORCID

Affiliation:

1. State Key Laboratory of Elemento-Organic Chemistry, Institute of Elemento-Organic Chemistry, Nankai University

2. Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)

Abstract

The [4+3] annulation reaction of crotonate-derived sulfur ylides with benzylidenepyrazolones using K2CO3 as the base is reported. The ready availability of starting materials and the simple cyclization procedure make this approach suitable for the preparation of a diverse array of 4,7-dihydro-1H-oxepino[2,3-c]pyrazoles in good to excellent yields.

Publisher

Georg Thieme Verlag KG

Subject

Organic Chemistry,Catalysis

Link

http://www.thieme-connect.de/products/ejournals/pdf/10.1055/s-0037-1610693.pdf

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