Oxazoles with trans-4-alkenyl substituents were synthesized using a Wittig condensation of the corresponding tri-n-butylphosphonium ylids with aldehydes. The resulting 4-alkenyloxazoles were obtained with greater than 95% trans selectivity.
Oxazoles with trans-4-alkenyl substituents were synthesized using a Wittig condensation of the corresponding tri-n-butylphosphonium ylids with aldehydes. The resulting 4-alkenyloxazoles were obtained with greater than 95% trans selectivity.