Helvetica chimica acta

Synthesis of 1H??Cyclopropa [b] naphthalenes via Trapping of o??Benzoquinodimethanes

P Müller, D Rodriguez

文献索引：Mueller, Paul; Rodriguez, Domingo Helvetica Chimica Acta, 1985 , vol. 68, p. 975 - 980

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被引用次数: 25

摘要

Abstract 1H-Cyclopropa [b] naphthalene (10a) and 3-methyl or dimethyl derivatives have been synthesized by interception of appropriately substituted o-quinodimethanes 3 with 1- bromo-2-chlorocyclopropene 5, and subsequent dehydrohalogenation of the adducts. The o- quinodimethane derivatives 3 in turn were obtained from the diynes 7via base-induced isomerization to bisallenes 8 and thermal electrocyclic ring closure.