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Six- versus Five-Membered Ring Formation in Radical Cyclizations of 7-Bromo-Substituted Hexahydroindolinones

✍ Scribed by Rashatasakhon, Paitoon; Ozdemir, Ayse Daut; Willis, Jerremey; Padwa, Albert


Book ID
125990020
Publisher
American Chemical Society
Year
2004
Tongue
English
Weight
80 KB
Volume
6
Category
Article
ISSN
1523-7060

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πŸ“œ SIMILAR VOLUMES


Five vs six membered ring formation in t
✍ Gilbert Stork; Robert Mook Jr. πŸ“‚ Article πŸ“… 1986 πŸ› Elsevier Science 🌐 French βš– 153 KB

The ratio of methylenecyclopentane to methylenecyclohexane derivatives observed in the vinyl radical cyclization increases with the concentration of substrate and tin hydride.

Six- versus five-membered ring formation
✍ Ana M. GΓ³mez; Marı́a D. Company; Clara Uriel; Serafı́n Valverde; J.CristΓ³bal LΓ³p πŸ“‚ Article πŸ“… 2002 πŸ› Elsevier Science 🌐 French βš– 74 KB

Radical cyclization of 1-vinyl-5-methyl-5-hexenyl radicals (radical numbering) affords six-membered ring products prevailing over the isomeric five-membered ring compounds; the former are generated through two reaction pathways: 6-endo-trig ring closure and rearrangement of intermediate methylenecyc