1: 2-bromobenzoxazole With isopropylmagnesium chloride in tetrahydrofuran T=20°C; 2 h; Inert atmosphere; 2: benzaldehyde With water in tetrahydrofuran T=20°C; 2 h; Inert atmosphere;

in N,N-dimethyl-formamide T=80°C; 8 h; Sealed tubeInert atmosphere;

bromine; lithium tert-butylate in tetrahydrofuran T=20°C; 0.166667 h;

chloroform; bromine Behandeln des Reaktionsgemisches mit Wasser;