Synthese et reactivite des perfluoroalkyl-3 alkylthio-3 propenoates d'ethyle: thiophenes et β-thioxoesters perfluoroalkyles
作者:A. Chauvin、J. Greiner、R. Pastor、A. Cambon
DOI:10.1016/s0040-4020(01)87467-6
日期:1986.1
reactivity of the adducts reported. The mono-adducts Z and E formed by the action of thiols with 1 were unambiguously identified by 19F-NMR. In addition to the expected alkenes Z and E, the reaction of 1 with ethyl mercaptoacetate led to ethyl 2-F-alkyl-4-hydroxy-3-thiophenecarboxylate 7. The cyclisation of ethyl 3-F-alkyl-3-(methoxycarbonylmethylthio) propenoate Z in basic medium afforded methyl 5-F-alkyl-
CHAUVIN, A.;GREINER, J.;PASTOR, R.;CAMBON, A., TETRAHEDRON, 1986, 42, N 2, 663-668
作者:CHAUVIN, A.、GREINER, J.、PASTOR, R.、CAMBON, A.
DOI:——
日期:——
Stereoselective synthesis of Z and E 3-F-alkyl 2-propenoates and derivatives
作者:Marion Lanier、Raphaël Pastor
DOI:10.1016/0022-1139(95)03297-q
日期:1995.11
The stereoselective preparation of 3-F-alkyl 2-propenoates and their derivatives is described. E-isomers are easily obtained by an in situ reduction-olefination from esters of F-acids and phosphonates or by a convenient dehydration of 3-F-alkyl 3-hydroxyesters. Z-isomers an known to be prepared by the hydrogenation of alkynes.
Stereoselective synthesis of F-alkyl α,β-unsaturated esters and their epoxidation
作者:Marion Lanier、Mustapha Haddach、Raphael Pastor、Jean G. Riess
DOI:10.1016/s0040-4039(00)60443-4
日期:1993.4
Strong electrophilic Z and E 3-F-alkyl 2-propenoates have been prepared stereoselectively. Their extremely difficult epoxidation has been achieved with retention of stereohemistry using t-BuO2Li, leading to F-alkyl glycidic esters, which are useful building blocks for the synthesis of new amphiphiles.