Electrophilic cleavage of cyclopropanes. Acetolysis of bicyclic and tricyclic cyclopropanes
作者:Kenneth B. Wiberg、Steven R. Kass、Armin De Meijere、K. C. Bishop
DOI:10.1021/ja00290a042
日期:1985.2
Acetolyse d'une serie de bicyclo [n.1.0] alcanes et de [n.m.l] propellanes. On etudie l'effet de la taille du cycle sur la vitesse et les produits de la reaction
Acetolyse d'une serie de bicyclo [n.1.0] alcanes et de [nml] propellanes。论etudie l'effet de la taille du cycle sur la vitesse et les produits de la反应
Bicyclo[n.1.0]alkylsilanes: Nouvelle synthese et reactivite
作者:M. Ahra、M. Grignon-Dubois、J. Dunoguès
DOI:10.1016/0022-328x(84)85159-1
日期:1984.8
A new and competitive synthesis of bicyclo[n.1.0]trimethylsilanes is reported, involving a facile and rapid process, and giving both endo and exo isomers. The behavior of these species towards acids (HCl, (AcOH)2BF3) has been investigated. The stereochemistry of the substrate does not influence the regiochemistry of the electrophilic attack, while the stereochemistry of the largest ring plays a decisive
Bis(trimethylsilyl)bicyclo[n,1,0]alcanes: Reactivite vis-a-vis des acides
作者:Micheline Grignon-Dubois、Mohamed Ahra
DOI:10.1016/0022-328x(85)88108-0
日期:1985.2
Bis(trimethylsilyl)bicyclo[n,1,0]alkanes react with acids, leading readily to substitution of one Me3Si group and/or opening of the three-carbon ring. The size of the larger ring (n value) plays a prominent role in the orientation of the reaction. The results can be rationalized by steric hindrance considerations. From a synthetic point of view, this study allows us to isolate new bis(trimethylsil