1: C17H21NO3 With trichloroisocyanuric acid; camphor-10-sulfonic acid in water; acetonitrile T=20°C; 14 h; Inert atmosphere; 2: acetic anhydride With pyridine; 4-(N,N-dimethlyamino)pyridine T=20°C; 22 h; Inert atmosphere;

1.1: N-(1-phenyl-ethylidene)-(3,4,5-trimethoxy-phenyl)-amine; (R)-TRIP-BINOL / benzene / 20 h / 20 - 50 °C / |Molecular sieve; |Inert atmosphere 2.1: trichloroisocyanuric acid; camphor-10-sulfonic acid / water; acetonitrile / 14 h / 20 °C / |Inert atmosphere 2.2: 22 h / 20 °C / |Inert atmosphere View Scheme