K. Kokin et al., HIGHLY CIS-SELECTIVE HORNER-WADSWORTH-EMMONS (HWE) REACTION OF METHYLBIS(2,4-DIFLUOROPHENYL)PHOSPHONOACETATE, Synthetic communications, 27(14), 1997, pp. 2387-2392
Of the previously reported Horner-Wadsworth-Emmons (HWE) reaction, the
olefination of methyl bis(2,4-difluorophenyl)phosphonoacetate (la) wi
th various aldehydes gave unsaturated esters in the highest cis-select
ivity.