trichlorophosphate Vilsmeier reaction;

1: 98 percent / K2CO3 / dimethylformamide 2: 94 percent / P(O)Cl3 View Scheme

1: 1-isopropyl-3-methoxy-benzene With hydrogenchloride; N-bromosuccinmide; water in acetone T=20°C; 0.0833333 h; Inert atmosphere; 2: With tert.-butyl lithium in tetrahydrofuran; pentane T=-78°C; 0.5 h; Inert atmosphere; 3: N,N-dimethyl-formamide in tetrahydrofuran; pentane T=-78 - 20°C; Inert atmosphere;

hydrogenchloride; aluminium trichloride in benzene 1.) 0 deg C, 4 h, 2.) 50 deg C, 0.5 h;

sodium hydroxide

lithium chloride in N,N-dimethyl-formamide Heating;