1: 9-bromo-4-methylacridine With n-butyllithium in hexanes; diethyl ether T=-78°C; 0.25 h; 2: trimethylstannyl chloride in hexanes; diethyl ether T=-78 - 20°C; 18 h;

n-butyllithium in diethyl ether; hexane soln. of ligand in Et2O was cooled to -78°C under N2, nBuLi in hexane was added dropwise for 15 min, soln. of Me3SnCl in hexane was added, warmed to room temp., stirred for 18 h; concd. in vacuo, flash chromy. with hexane/ethyl acetate/Et3N;

1: 9-bromo-4-methylacridine With n-butyllithium in hexanes; diethyl ether T=-78°C; 0.25 h; 2: trimethylstannyl chloride in hexanes; diethyl ether T=-78 - 20°C; 18 h;