1: 4-tert-butyl-benzyl alcohol With iodine; potassium carbonate in tert-butyl alcohol T=70°C; 8 h; 2: ethanolamine in tert-butyl alcohol T=70°C; 18 h;

Ersorb-4 in xylene T=130°C; 5 h;

triethylamine in benzene 24 h; Heating;

sodium hydrogencarbonate; N,N',N''-tris(1H-1,2,4-triazole)phosphoric triamide 1.) acetonitrile, pyridine, room temp., 3 min., 2.) 10 min.; Yield given. Multistep reaction;