2-tert-butylimino-2-diethylamino-1,3-dimethylperhydro-1,3,2-diazaphosphorine in tetrahydrofuran T=20°C; 0.0166667 h;

1: N,N'-dicyclohexylcarbodiimide / CH2Cl2 / 1.) 30 min, 0 deg C, 2.) 1 h, room temperature 2: 55 percent NaH / dimethylformamide / 1.) 30 min, 10 - 15 deg C, 2.) 1 h, room temperature View Scheme

sodium hydride in N,N-dimethyl-formamide 1.) 30 min, 10 - 15 deg C, 2.) 1 h, room temperature; Yield given;