Reference
- Hemmi , K. , Takeno , H. , Hashimoto , M. and Kamiya , T. 1983 . Chem. Pharm. Bull. , 30 : 111 and references therein
- ÖHler , E. and Kanzler , S. 1995 . Synthesis , : 539 For preliminary results with propenylphosphonates (1:R2, R3[dbnd]H) and for leading references see