K. Fettes et al., PREPARATION OF ALPHA-METHOXYALLYLPHOSPHONATES AND THEIR CONVERSION INTO 2-METHOXYALKA-1,3-DIENES, Journal of the Chemical Society. Perkin transactions. I, (17), 1995, pp. 2123-2127
A range of alpha-alkoxyphosphonates, including novel alpha-methoxyally
l phosphonates have been prepared from acetals. The latter have been u
sed to provide an efficient and convenient synthesis of conjugated met
hoxy dienes, in which E-geometry predominates in the newly formed doub
le bond but the geometry of the original allyl system is preserved.