in diethyl ether T=0°C; Grignard reaction;

1: 40 percent / NaBH4 / tetrahydrofuran; H2O / 0.08 h / 0 °C 2: t-BuMgCl / diethyl ether; tetrahydrofuran / 20 °C View Scheme

sodium tetrahydroborate in tetrahydrofuran; water T=0°C; 0.0833333 h;

1: Bromure de phenyl magnesium; carbonic acid tert-butyl ester 2-formyl-phenyl ester in diethyl ether T=-78°C; Grignard reaction; 2: methyl-magnesium chloride in diethyl ether T=20°C; Grignard reaction;