Preparation of optically active 2-(or 3)(p-tolylsulfinyl)-3(or 2)furyl- or thienylcarboxaldehydes

Article abstract of DOI:10.1016/0957-4166(95)00266-R

The preparation of the four enantiomerically pure title compounds is described by reaction of (I)-(-)-Ss-menthyl-p-toluenesulfinate on furan or thiophene precursors.