Three types of optically active allyltin compounds, R* 2Sn (allyl) 2 (R*= 2-phenylbutyl, 2- methylbutyl, and 3-phenylbutyl), R* R'Sn (allyl) 2 (R*= 2-octyl or 2-phenylbutyl, R'= phenyl), and R* R1R2Sn (allyl)(R*= 2-phenylbutyl, R'= phenyl, R2= methyl), have been synthesized. On the basis of'H NMR spectra, a*-stacking interaction between the 2-phenylbutyl and the allyl groups is suggested. Optically active allyltin compounds thus obtained were ...