Stereodivergent synthesis of optically active tertiary alcohols via addition reaction of chiral 2-acyl oxazolidine with organometallics
作者:Yutaka Ukaji、Kouji Yamamoto、Masashi Fukui、Tamotsu Fujisawa
DOI:10.1016/0040-4039(91)80649-q
日期:1991.6
observed that diastereoselectivity in an addition reaction to chiral 2-acyl oxazolidine, derived from (S)-prolinol, can be fully regulated under appropriate conditions. Addition of organotitanium triisopropoxides provided (S)-tertiary alcohols, while organolithium reagents afforded the corresponding (R)-alcohols. Application of this methodology was demonstrated in the synthesis of (+)- and (−)-trihexyphenidyl
观察到,在适当条件下,可以完全调节与(S)-脯氨醇衍生的手性2-酰基恶唑烷的加成反应中的非对映选择性。有机三异丙醇钛的添加提供了(S)-叔醇,而有机锂试剂提供了相应的(R)-醇。在合成(+)-和(-)-三己基苯吡啶基中证明了该方法的应用。