反应条件
1: ethyl 2-ethoxymethylidene-3-oxo-3-trifluoromethylpropionate With chloro-trimethyl-silane; magnesium in N,N-dimethyl-formamide T=0 - 10°C; Cooling with ice; 2: methylhydrazine in ethanol; water; N,N-dimethyl-formamide T=-50 - 20°C; Product distribution / selectivity;