反应条件
in tetrahydrofuran (N2); stirring (room temp., 3 h); solvent removal (vac.), extn. (CH2Cl2), concn., TLC (SiO2; hexane/CH2Cl2), recrystn. (CHCl3/cyclohexane, room temp., 1 week), recrystn. of the 2nd Hg-containing complex from CH2Cl2 by slow evapn. at -20°C;