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ChemInform Abstract: Efficient and Divergent Synthesis of Fully Substituted 1H-Pyrazoles and Isoxazoles from Cyclopropyl Oximes.

โœ Scribed by Kewei Wang; Dexuan Xiang; Jinying Liu; Wei Pan; Dewen Dong


Publisher
John Wiley and Sons
Year
2008
Weight
29 KB
Volume
39
Category
Article
ISSN
0931-7597

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โœฆ Synopsis


Abstract

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a โ€œFull Textโ€ option. The original article is trackable via the โ€œReferencesโ€ option.


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ChemInform Abstract: A Divergent Synthes
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## Abstract Reaction of spirocyclopropanepyrazole derivative (I) with ฮฑโ€chloro esters (III) in the presence of a NaI/K~2~CO~3~ system results in cyclopropane ring opening and subsequent Cโ€ or Nโ€substitution to furnish dihydropyridazines (IV) and Nโ€substituted dihydropyrazoles (V).