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The Synthesis of Electron Donor-acceptor Substituted Pyrazoles

Miller, R. D. and Reiser, O. (1993) The Synthesis of Electron Donor-acceptor Substituted Pyrazoles. Journal of Heterocyclic Chemistry 30, pp. 755-763.

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Abstract

A variety of 1,3- and 1,5-donor-acceptor substituted pyrazole derivatives have been synthesized by the cyclocondensation of a,b-ethynyl ketones with substituted phenyl hydrazines. The regioselectivity of the cyclization depends on the reaction conditions in a manner consistent with competitive 1,2- and 1,4-addition followed by ring closure. 1,4-Disubstituted derivatives can be prepared from the ...

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Item Type:Article
Date:1993
Institutions:Chemistry and Pharmacy > Institut für Organische Chemie > Lehrstuhl Prof. Dr. Oliver Reiser
Subjects:500 Science > 540 Chemistry & allied sciences
Status:Published
Refereed:Yes, this version has been refereed
Created at the University of Regensburg:Unknown
Owner: Helge Knüttel (ADMIN)
Deposited On:14 Aug 2006
Last Modified:05 Aug 2009 13:22
Item ID:265
Owner Only: item control page
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