threo-3-Hydroxycarboxylic acids as key intermediates in a highly stereoselective synthesis of (Z)- and (E)-olefins and enol ethers
作者:Johann Mulzer、Andreas Pointner、Alexander Chucholowski、Gisela Brüntrup
DOI:10.1039/c39790000052
日期:——
threo-3-Hydroxycarboxylic acids, which are stereoselectively obtained from metallated carboxylic acids and aldehydes, are converted into (Z)-olefins and enol ethers with the triphenylphosphine–diethyl azodicarboxylate-adduct, whereas the corresponding (E)-isomers are prepared via the β-lactones.
苏式-3-羟基羧酸,其立体选择性金属化,从羧酸和醛而获得,被转换成(Ž)烯烃和烯醇与三苯基膦-偶氮二甲酸二乙酯加合物醚,而相应的(ë) -异构体,制备经由所述β-内酯。