(±)-cis,cis-2,2′-spirobiindane-1,1′-diol (1) is synthesized stereoselectively in four steps beginning with 1-indanone in 68% overall yield. An improved resolution of diol 1 is described by preparing and separating diastereomeric mono-esters of 1 using (2S)-O-(tert-butyldimethylsilyl)mandeloyl chloride (10).
(1-)-顺式,顺式-2,2'-
螺双茚满-1,1'
-二醇(1)以1-
茚满酮开始的四个步骤立体选择性地合成,总产率为68%。二醇的改进的分辨率1是通过制备和分离非对映体的单酯所描述1使用(2-小号- )Ö - (叔丁基二甲基)扁桃酰
氯(10)。