thionyl chloride; (diethylaminomethyl)-polystyrene in diethyl ether 1) -10 deg C, 1 h; 2) r.t., 30 h;

1: 83 percent / SOCl2, (diethylaminomethyl)-polystyrene / diethyl ether / 1) -10 deg C, 1 h; 2) r.t., 30 h 2: 82 percent / t-C4H9OK / dimethylsulfoxide / 24 h View Scheme

pyridine; tri-bromide; triphenylphosphine in dichloromethane 1) -10 deg C, 4 h, 2) 20 deg C, 24 h;