NEW EXAMPLES OF 1,6-HYDROGEN AND 1,7-HYDROGEN TRANSFER PROMOTED BY ANALPHA-SILYL GROUP IN RHODIUM(I)-CATALYZED RADICAL REACTIONS OF ACYCLIC ENEDIYNES

Authors
MANABE T YANAGI SI OHE K UEMURA S
Citation
T. Manabe et al., NEW EXAMPLES OF 1,6-HYDROGEN AND 1,7-HYDROGEN TRANSFER PROMOTED BY ANALPHA-SILYL GROUP IN RHODIUM(I)-CATALYZED RADICAL REACTIONS OF ACYCLIC ENEDIYNES, Organometallics, 17(14), 1998, pp. 2942-2944
Citations number
48
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Inorganic & Nuclear
Journal title
Organometallics → ACNP
ISSN journal
02767333
Volume
17
Issue
14
Year of publication
1998
Pages
2942 - 2944
Database
ISI
SICI code
0276-7333(1998)17:14<2942:NEO1A1>2.0.ZU;2-0
Abstract
A rhodium(I) catalyst triggers cycloaromatization of omega-trialkylsil ylated acyclic enediynes to afford benzosilacycloalkane or vinylsilane products via 1,6- and/or 1,7-hydrogen transfer, presumably effected b y radical stabilization by an alpha-silyl moiety, and via a seven and/ or eight-membered rhodacycle intermediate. The addition of a catalytic amount of dimethyl maleate is essential to obtain, better yields air the products.