Synthesis of New Phosphorous Ylides Containing Urethane Derivatives
摘要:
The readily available (DMAD DEAD) and triphenylphosphine undergo facile reaction with several urethanes such as methyl-N-phenylcarbamate, ethyl-N-phenylcarbamate, phenyl-N-phenylcarbamate, phenyl-N-(2-methylphenyl) carbamate and phenyl -N(3-methylphenyl)carbamate, to give crystalline phosphorus ylides in good yields. The overall sequence from a 1:1:1 reaction provides a simple and efficient rout to functionalized urethanes.