Intramolecular cyclisation of (Z)-N-4-alkenylnitrones and the effects of alkenyl substituents
作者:William P. Hems、Choon-Hong Tan、Thomas Stork、Neil Feeder、Andrew B. Holmes
DOI:10.1016/s0040-4039(98)02617-3
日期:1999.2
The intramolecular 1,3-dipolar cycloadditionreactions of (Z)-N-4-alkenylnitrones carrying various alkenyl substituents were investigated, and the regiochemistry of the resulting isoxazolidines was determined. Silyl- and bromo-substituents were found to effect significant regiocontrol on the intramolecular nitrone dipolar cycloadditionreaction.