PYRAZOLINES: PART II
- 1 December 1960
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Chemistry
- Vol. 38 (12), 2410-2417
- https://doi.org/10.1139/v60-327
Abstract
Product analysis has been carried out on the pyrolysis reaction in the liquid and vapor phase of 4- and 5-methyl-3-carbomethoxy-Δ2-pyrazolines and 3-methyl-3-carbomethoxy-Δ1-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 Δ2-pyrazolines was found to require a catalyst, such as potassium hydrogen phosphate, which is believed to make possible the transformation of the Δ2-pyrazoline into the pyrolyzable Δ1-pyrazoline.Keywords
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