反应条件
in dichloromethane N2 atmosphere, addn. of soln. of borane to soln. of stannyl compound at -78 to -60°C (2 h), warming to room temp., stirring (room temp., 1 h), addn. to soln. of Me2SnCl2 at room temp. (45 min); spectroscopic yield 100percent, not isolated;
