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Direct synthesis of pyrazoles from esters using tert-butoxide-assisted C-(C=O) coupling
- Authors
- Kim, Bo Ram; Sung, Gi Hyeon; Ryu, Ki Eun; Lee, Sang-Gyeong; Yoon, Hyo Jae; Shin, Dong-Soo; Yoon, Yong-Jin
- Issue Date
- 2015
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- CHEMICAL COMMUNICATIONS, v.51, no.44, pp.9201 - 9204
- Indexed
- SCIE
SCOPUS
- Journal Title
- CHEMICAL COMMUNICATIONS
- Volume
- 51
- Number
- 44
- Start Page
- 9201
- End Page
- 9204
- ISSN
- 1359-7345
- Abstract
- This paper describes the direct synthesis of pyrazoles from esters that comprises two sequential reactions: tert-butoxide-assisted C-C(=O) coupling reaction to yield beta-ketonitrile or alpha,beta-alkynone intermediates, and condensation by hydrazine addition. The method reported allows for easy control of the regioselectivity and structure of substituents at N-1, C-3, C-4 and/or C-5 positions.
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Related Researcher
- YOON, Hyo Jae
- College of Science (Department of Chemistry)