反应条件
in dichloromethane N2 atmosphere, addn. of soln. of stannyl compound to suspension of Me2SnCl2 at room temp., addn. of soln. of tBuBBr2 at -50°C (1.5 h), warming to room temp. (1.5 h), stirring (room temp., 3 h); other reaction time; NMR-monitoring, not isolated, spectroscopic yields: PhN(BtBuCl)(Sn(Me2Cl) 50percent; tBuBClBr 50percent;
