作者:SŁawomir Jarosz、Aleksander Zamojski
DOI:10.1016/0040-4020(82)80228-7
日期:1982.1
High-pressure mercury lamp irradiation of chiral alkyl glyoxylates [R(−)-menthyl,R(−)- andS(+)-2-octyl,R(−)-andS(+)-2, 2-dimethyl-3-butyl] with furan led to alkyl 2,7-dioxabicyclo-[3.2.0] hept-3-ene-6-car☐ylates (13a–e) exhibiting low (2.5–7.3%) optical purity. Compounds13a–e were isomerized to alkyl 3-furylglycolates (14a–e) in good yield. ConfigurationS was assigned to levorotary methyl 3-furlymethoxyacetate
手性烷基乙醛酸酯[ R(-)-薄荷基,R(-)-和S(+)-2-辛基,R(-)-和S(+)-2、2-二甲基- [3-丁基]与呋喃的反应生成低光学纯度(2.5-7.3%)的2,7-二氧杂双环-[3.2.0]庚-3-烯-6-戊酸酯烷基化物(13a–e)。化合物13a-e异构化为3-呋喃基乙醇酸烷基酯(14a-e),收率很高。将构型S指定为3-呋喃甲氧基乙酸左旋甲基。对不对称合成的结果提出了两种解释。