Highly regio and chemoselective ring opening of epoxides with trimethylsilyl azide in the presence of aluminium isopropoxide and titanium isopropoxide
作者:Kun I. Sutowardoyo、Mohamed Emziane、Paul Lhoste、Denis Sinou
DOI:10.1016/s0040-4020(01)86420-6
日期:1991.1
The ring-opening of functionalized epoxides with trimethylsilyl azide in the presence of a catalytic amount of Ti(O-i-Pr)4 or Al(O-i-Pr)3 is described. The reaction is stereospecific and highly regiospecific, leading generally to the formation of the carbon-azido bond on the less substituted carbon. The mechanism of this reaction is also discussed.
Ouverture régiosélective d'époxydes par Me3SiN3 catalysée par Ti[O.iPr]4