Formation of the 4-Methylene-l,4-dihydrophosphinine Ring System in the Reaction of 2,5-Dihydro-3,4-dimethyl-1H-phosphole 1-Oxides with Dichlorocarbene

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Abstract

Earlier we reported on the two-step ring enlargement of 1-substituted 2,5-dihydro-3-methyl-lH-phosphole 1-oxides. The first step involves the addition of dichlorocarbene to the double bond of the starting material,1while the cyclopropane ring so formed is opened in the second step to give dihydrophosphinine oxides.2 Further reaction with dichlorocarbene followed by ring expansion in a similar manner affords phosphepine oxides3.

Original languageEnglish
Pages (from-to)6361-6362
Number of pages2
JournalJournal of Organic Chemistry
Volume55
Issue number26
DOIs
Publication statusPublished - Jan 1 1990

ASJC Scopus subject areas

  • Organic Chemistry

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