1: With Ind2TiMe2 in toluene T=105°C; P=760 Torr; 7 h; 2: With sodium cyanoborohydride; zinc(II) chloride in methanol; toluene T=25°C; 16 h;

boron trifluoride diethyl etherate; dihydrogen peroxide in hexane; dichloromethane; water Inert atmosphere;

1: 4-methoxy-benzaldehyde; methylamine With boron trifluoride diethyl etherate in dichloromethane T=20°C; 2 h; Inert atmosphere; 2: triethyl borane With dihydrogen peroxide in hexane; dichloromethane; water 0.5 h; Inert atmosphere;