反应条件
aq. NH4Cl in tetrahydrofuran org. compd. soln. addn. to Sn-compd, soln. at -68°C, mixt. stirring overnight (N2) to room temp., hydrolysis with satd. aq. NH4Cl, extn. (Et2O), extract washing (water), drying (MgSO4), vac. evap., dissoln. (Et2O); solid Sn-compd. filtration off, filtrate evapn., residue chromy on slilica preparatory plate (5-10percent EtOAc/light petroleum); elem. anal.;