Preparation of novel N-sulfonylated (S,S)-2,3-diaminosuccinate-type chiral auxiliaries and application to an asymmetric 1,3-dipolar cycloaddition reaction of nitrile oxides to allyl alcohol
作者:Masakazu Serizawa、Yutaka Ukaji、Katsuhiko Inomata
DOI:10.1016/j.tetasy.2006.11.031
日期:2006.11
Novel N-sulfonylated (S,S)-2,3-diaminosuccinate-type chiral auxiliaries, which have the tartaric acid-like framework with a sulfonamide group instead of a hydroxyl group, were synthesized from l-aspartic acid. The synthesized (S,S)-2,3-diaminosuccinate derivatives were applied to an asymmetric 1,3-dipolar cycloaddition reaction of nitrile oxides to allyl alcohol to afford the corresponding optically
由L-天冬氨酸合成了新型的N-磺酰化(S,S)-2,3-二氨基琥珀酸酯型手性助剂,其具有酒石酸样骨架,并带有磺酰胺基而不是羟基。将合成的(S,S)-2,3-二氨基琥珀酸酯衍生物应用于腈类化合物与烯丙醇的不对称1,3-偶极环加成反应中,得到相应的旋光性2-异恶唑啉,对映选择性高达73% ee。通过使用酒石酸二异丙酯作为手性助剂,对脸部的分化与之截然相反。