in benzene a benzene soln. of stannol was concd. under vac. at 25-35°C or under a stream of N2; detd. by m. p. and (119)Sn NMR data;

borane-THF in tetrahydrofuran addn. of borane soln. to trineophyltin hydroxide soln. under nitrogen with magnetic stirring; refluxing, 1 h; evapn. under reduced pressure; addn. of diethyl ether and water; stirring, 10 min.; removal of aq. layer by pipette; washing ether layer with water; repeating twice; drying over magnesium sulfate; filtration; evapn. in vac.; crystn.; elem. anal.; by the method of Chopa et al., synthesis, 1983, 722;