PYRAZOLINES: PART II

Product analysis has been carried out on the pyrolysis reaction in the liquid and vapor phase of 4- and 5-methyl-3-carbomethoxy-Δ 2 -pyrazolines and 3-methyl-3-carbomethoxy-Δ 1 -pyrazoline. The proportion of cyclopropane product was found to be greater than earlier reports had indicated and was high...

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Bibliographic Details
Published in:Canadian journal of chemistry 1960-12, Vol.38 (12), p.2410-2417
Main Authors: McGreer, Donald E, Wai, Wing, Carmichael, George
Format: Article
Language:English
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Summary:Product analysis has been carried out on the pyrolysis reaction in the liquid and vapor phase of 4- and 5-methyl-3-carbomethoxy-Δ 2 -pyrazolines and 3-methyl-3-carbomethoxy-Δ 1 -pyrazoline. The proportion of cyclopropane product was found to be greater than earlier reports had indicated and was higher for the vapor-phase pyrolysis than for the liquid-phase reaction. Vapor-phase pyrolysis of Δ 2 -pyrazolines was found to require a catalyst, such as potassium hydrogen phosphate, which is believed to make possible the transformation of the Δ 2 -pyrazoline into the pyrolyzable Δ 1 -pyrazoline.
ISSN:0008-4042
1480-3291
DOI:10.1139/v60-327