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- W2017923291 endingPage "5166" @default.
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- W2017923291 abstract "The reaction of α-branched aldehydes with diethyl 1-carbomethoxyethyl phosphonate 1b in THF/nBuLi at low temperature leads stereoselectively to Z α-methyl α,β-unsaturated esters. From a linear aldehyde, the reaction is less stereoselective, while from α,β-unsaturated ones, the E isomers are predominantly formed in good yields. From diphenyl 1-carbomethoxyethyl phosphine oxide 2b, E α-methyl α,β-unsaturated esters are stereoselectively formed either in DMF/tBuOK or in phase transfer conditions, whatever the starting aldehyde is, also in good yields. This reagent can thus advantageously replace the corresponding P-ylid. In all cases, the reaction conditions are determined so that by-products formation is minimized." @default.
- W2017923291 created "2016-06-24" @default.
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- W2017923291 date "1984-01-01" @default.
- W2017923291 modified "2023-10-12" @default.
- W2017923291 title "Synthese stereoselective d'esters α,β- ethyleniques α-methyles Z ou E par la reaction de wittig-horner a partir de phosphonates ou d'oxydes de phosphine" @default.
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- W2017923291 doi "https://doi.org/10.1016/s0040-4020(01)91264-5" @default.
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