Az l-(2,4,6-tri-izopropiIfeniI-)3-metiI-2,5-dihidro-lH-foszfol-1-oxid szelektfv âtalakîtâsai gyürübövftesi reakciökban

Forintos Henrietta, Keglevich György

Research output: Contribution to journalArticle

Abstract

Selective transformations during the ring enlargement of a l-(2,4,6-triisopropylphenyl)-2,5-dihydro-lH-phosphole 1-oxide. Dichlorocyclopropanation of 1-(2,4,6-triisopropylphenyl)-2,5-dihydro-lH-phosphole oxid with dichlorocarbene generated from chloroform by aqueous sodium hydroxide under phase transfer catalysis gave adduct 6A in a selectivity of 80%. The use of sodium trichloroacetate as the precursore of dichlorocarbene resulted in, however, the exclusive formation of the other isomer (6B). The base- and thermo-induced cyclopropane ring opening of the adducts (6) led, surprisingly, to distinct dihydrophosphinine isomers (7 and 8, respectivelly) in a fully selective manner.

Original languageHungarian
Pages (from-to)544-549
Number of pages6
JournalMagyar Kemiai Folyoirat, Kemiai Kozlemenyek
Volume107
Issue number12
Publication statusPublished - Dec 1 2001

ASJC Scopus subject areas

  • Chemistry(all)

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