1: With oxalyl dichloride; N,N-dimethyl-formamide in tetrahydrofuran; acetonitrile T=0°C; 1.5 h; 2: With sodium tetrahydroborate in tetrahydrofuran; DMF (N,N-dimethyl-formamide); acetonitrile T=-78 - -20°C; 3 h;

1: 1.) yellow mercuric oxide; 2.) hydchloric acid / 1.) aq. acetic acid; 2.) water 2: 100 percent / LiAlH4 / diethyl ether / 1.) reflux, 3 h; 2.) room temperature, 14 h 3: 51 percent View Scheme

1: 100 percent / LiAlH4 / diethyl ether / 1.) reflux, 3 h; 2.) room temperature, 14 h 2: 51 percent View Scheme

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