Diastereoselective synthesis of dimethyl cyclopropane-1,1-dicarboxylates from a γ-alkoxy-alkylidene malonate and sulfur and phosphorus ylides
作者:Alain Krief、Laurent Provins、Alexandre Froidbise
DOI:10.1016/s0040-4039(97)10822-x
日期:1998.3
Isopropylidene diphenylsulfurane and isopropylidene triphenylphosphorane react by the same (Re) face of the alkylidene malonate derived from the acetonide of (d)-glyceraldehyde to produce almost exclusively a single diastereoisomer of the corresponding dimethyl cyclopropane-1,1-dicarboxylate.
异亚丙基二苯基硫烷与异亚丙基三苯基膦烷在亚烷基丙二酸酯的相同(Re)面上反应,该亚烷基丙二酸酯衍生自(d)-甘油醛的乙炔化物,几乎只生成相应的二甲基环丙烷-1,1-二羧酸酯的单一非对映体。