Small-Ring Compounds. XV. Methylenecyclobutene and Related Substances1

DE Applequist, JD Roberts

Index: Applequist; Roberts Journal of the American Chemical Society, 1956 , vol. 78, p. 4012,4022

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Citation Number: 62

Abstract

Methylenecyclobutene has been synthesized from diethyl methylenemalonate by way of 3- rnethylenecyclobutanecarboxylic acid and 3-rnethylenecyclobutylamine. The synthesis featured the use of anthracene as a blocking group for the exocyclic double bond during malonic-ester closure of the cyclobutane ring. 4, 4-Dimethyl-3-methylenecyclobutene has been obtained by degradation of a-pinene and 1-phenyl-3-methylenecyclobutene by ...

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