Stereoselective transformations of the optically-active trioganotin hydrides into optically-active tetraorganotin compounds

(−)-t-Butylneophylphenyltin hydride reacts with diazomethane to give (−)-t-butylmethylneophylphenyltin, while (−)- or (+)-methylneophylphenyltin hydrides add to the double bond of bifluorenylidene to give (−)- or (+)-bifluorenylylmethylneophylphenyltin,...