sodium hydride in N,N-dimethyl-formamide 1.) 0 deg C, 30 min, 2.) room temperature, 2 h;

Heatingother 2-allyloxy substituted 4,5-diphenyloxazoles investigated; Product distribution;

1: 80 percent / sodium, hexamethylphosphoramide, molecular sieve / tetrahydrofuran / Ambient temperature 2: 95 percent / 700 °C / 0 Torr 3: 55 percent / NaH / dimethylformamide / 1.) 0 deg C, 30 min, 2.) room temperature, 2 h View Scheme

1: 90 percent / 650 °C / 0 Torr 2: 55 percent / NaH / dimethylformamide / 1.) 0 deg C, 30 min, 2.) room temperature, 2 h View Scheme

1: 95 percent / 700 °C / 0 Torr 2: 55 percent / NaH / dimethylformamide / 1.) 0 deg C, 30 min, 2.) room temperature, 2 h View Scheme