COTTENS, SYLVAIN;SCHLOSSER, MANFRED, TETRAHEDRON., 44,(1988) N 23, C. 7127-7144
作者:COTTENS, SYLVAIN、SCHLOSSER, MANFRED
DOI:——
日期:——
Attempted and accomplished syntheses of a few monofluorinated chrysanthemic acid derivatives
作者:Sylvain Cottens、Manfred Schlosser
DOI:10.1016/s0040-4020(01)86081-6
日期:1988.1
A sulfone mediated approach presumably did produce methyl α-fluoro-chrysanthemate 10 but, if formed, the latter immediately underwent dehydrofluorination under the strongly basic reaction conditions. The cis- and trans-isomers of methyl β- and γ-fluorochrysanthemates 11 and 12 were concomitantly obtained by treating 3-fluoro-2,5-dimethyl-2,4-hexadiene with methyl diazoacetate in the presence of catalytic