boron trifluoride diethyl etherate; ethanethiol 36 h; Ambient temperature;

1: N-(2-bromophenyl)-O-benzyl carbamate With n-butyllithium in diethyl ether; hexane T=-78°C; 1 h; 2: chloro-trimethyl-silane in diethyl ether; hexane T=-78 - 20°C; 18 h; 3: With palladium 10 on activated carbon; hydrogen T=20°C; 24 h;