HIGHLY STEREOSELECTIVE SYNTHESIS OF DIALKYL 2-ALKYLIDENE GLUTARATES
摘要:
Nucleophelic substitution of dialkyl (E)-2-bromomethylene glutarates 2 by magnesium dialkyl cuprates generated in situ provided a regio and highly stereoselective methodology for the synthesis of dialkyl 3-alkylidene glutarates 3 in good yields.
Addition of bromine to β′-(functional alkyl) α,β-unsaturated esters stereoselective synthesis of β-haloderivatives
作者:Taïcir Ben Ayed、Hassen Amri、Mohamed Moncef El Gaied
DOI:10.1016/s0040-4020(01)91028-2
日期:1991.11
A new convenient stereoselective synthesis of β-brominated β′-(functional alkyl) α,β-unsaturatedesters has been developed by the reaction of tetraalkylammonium fluoride in HMPA with ethyl 2,3-dibromo 2-(functional alkyl) propionates which can be easily prepared by addition of bromine to β′-(functional alkyl) acrylates. An interpretation of the observed stereoselectivity is proposed.
HIGHLY STEREOSELECTIVE SYNTHESIS OF DIALKYL 2-ALKYLIDENE GLUTARATES
作者:Ali Samarat、Jacques Lebreton、Hassen Amri
DOI:10.1081/scc-100103986
日期:2001.1
Nucleophelic substitution of dialkyl (E)-2-bromomethylene glutarates 2 by magnesium dialkyl cuprates generated in situ provided a regio and highly stereoselective methodology for the synthesis of dialkyl 3-alkylidene glutarates 3 in good yields.
Stereoselective Synthesis of Some Dialkyl (E)-2-Bromomethylene Glutarates