The preparation of optically active Δ2-isoxazolines via addition of nitrile oxides to chiral acryloyl esters bearing cyclitols as auxiliaries
作者:Takahiko Akiyama、Kohji Okada、Shoichiro Ozaki
DOI:10.1016/0040-4039(92)89026-9
日期:1992.9
An acryloyl ester derived from (1L)3-t-butyldiphenylsilyl-1,2:5,6-di-O-cyclohexylidene -chiro-inositol underwent 1, 3-dipolar cycloaddition with nitrile oxide to give Δ2-isoxazolines of high diastereomeric excess (up to 90% de).
从(1L)中得到的丙烯酰基酯3-吨-butyldiphenylsilyl-1,2:5,6-二- ö亚环己基-手性肌醇进行1,3-偶极环加成腈氧化物,得到Δ 2高非对映体的-isoxazolines多余(高达90%de)。