Synthesis of New Phosphorous Ylides Containing Urethane Derivatives

Abstract

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.

Keywords:

• Acetylenic esters
• phosphorus compounds
• urethanes

Acknowledgments

The authors express appreciation to Shahid Bahonar University of Kerman, Faculty Research Fund for its support of this investigation.

Notes

*For two rotamers

*For two rotamers

*For two rotamers

*For two rotamers

*For two rotamers