O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine in acetonitrile T=20°C; 3 h; Inert atmosphere;

1: With O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate in acetonitrile T=20°C; 0.166667 h; Inert atmosphere; 2: With N-ethyl-N,N-diisopropylamine in acetonitrile T=20°C; Inert atmosphere;

phosgene; potassium carbonate 1.) toluene, THF, RT, overnight, 2.) CH2Cl2, RT, overnight; Yield given. Multistep reaction;