A New Synthetic Route to (S)-Chroman Aldehyde, a Key Chiral Precursor of Vitamin E
作者:Hisashi Mikoshiba、Koichi Mikami、Takeshi Nakai
DOI:10.1055/s-2001-14642
日期:——
A highly stereocontrolled synthetic route to (S)-chroman aldehyde has been developed which starts with trimethyl-p-hydroquinone and (R)-glyceraldehyde acetonide and employs as key steps the Michael addition of the aromatic copper species onto the (R)-4-acryloyl-1,3-dioxolane followed by the highly diastereoselective methylation of the resulting ketone adduct.
已开发出一种高度立体控制的合成路线,以制备(S)-色满醛,该路线始于三甲基对苯二酚和(R)-甘油醛缩丙酮,关键步骤涉及芳香铜物种对(R)-4-丙烯酰-1,3-二氧六环的迈克尔加成,随后对生成的酮加合物进行高度区域选择性的甲基化反应。