The geometrical constraints of the fluoride-initiated and Lewis acid-catalyzed intramolecular addition of allylsilanes to enone systems were shown to be governed by kinetic-ring-size preferences. Molecules containing adjacent quaternary carbon atoms can be prepared using this method.
A new approach for the formation of fused cyclooctane or cyclohexane rings
作者:George Majetich、Ken Hull、Richard Desmond
DOI:10.1016/s0040-4039(00)94902-5
日期:1985.1
The intramolecular regioselective addition of unsymmetrical allylsilanes to conjugated dienones is shown to permit facile entry into 5-6, 6-6, 5-8, and 6-8 bicyclic ring systems.