Radical reactions of (2-trimethylsilylallyl)triphenylstannane with alkyl halides: A neutral acetone enolate equivalent
作者:Eun Lee、Sang-Gu Yu、Chang-Uk Hur、Seung-Min Yang
DOI:10.1016/s0040-4039(00)88489-0
日期:1988.1
Facile transfer of 2-trimethylsilylallyl group is achieved when (2-trimethylsilylallyl)triphenylstannane is reacted with some halides under radical reaction conditions.
Planar chirality: Ring‐closingmetathesis of 1,2‐diallylmetallocenes afforded the corresponding 4,7‐dihydroindenyl species in high yields. The metallocenes are planar chiral with two different allylic substituents, and kinetic resolution of the racemic 1,2‐diallylmetallocene derivatives was realized by molybdenum‐catalyzed asymmetric ring‐closingmetathesis with excellent enantioselectivity (see scheme)
Silicon in organic synthesis. 25. Thermolysis and desiliconation-alkylation of [1-(trimethylsilyl)cyclopropyl]ethylenes as a route to spirocyclic sesquiterpenes
作者:Leo A. Paquette、Tu Hsin Yan、Gregory J. Wells
DOI:10.1021/jo00193a031
日期:1984.9
Enantioselective Desymmetrization of 1,2,3-Trisubstituted Metallocenes by Molybdenum-Catalyzed Asymmetric Intraannular Ring-Closing Metathesis
Enantioselective desymmetrization of C-s-symmetric (eta(5)-1,2,3-triallylic indenyl)M(II) complexes (1; M = Fe or Ru) was realized by the molybdenum-catalyzed asymmetric ring-closing metathesis, and the corresponding planar-chiral metallocenes 2 were obtained in good yields with high enantioselectivity of up to 98% ee.
Synthèse de diènes-1,4 fonctionnalisés par addition de zinciques allyliques fonctionnalisés sur des alcynes vrais et leur cyclisation en hétérocycles ou carbocycles