in benzene exclusion of moisture, addn. of 3-mercaptopropionic acid in benzene to Al(O-iPr)3 in benzene, addn. of tributyltin isopropoxide in benzene (molar ratio 1:1:1), refluxing; evapn., elem. anal.;

in isopropyl alcohol

in benzene-d6 Kinetics; using Schlenk techniques; benzene-d6 soln. of Ph3SnO(t-Bu) and (o-MeC6H4)3SnO(i-Pr) in 1:1 ratio at 26°C; monitoring by NMR;