in hexane 0.5 h; Ambient temperature;

bromine 1.) CH2Cl2, 5 min, 2.) 30 min; Yield given. Multistep reaction;

trifluorormethanesulfonic acid; lithium trifluoromethane sulfonate in acetonitrile T=25°C; influence of concentration of CF3SO3H and MeOH; Rate constantMechanism;