Monoperoxyphthalic acid, magnesium salt in methanol T=0°C; 0.5 h;

1: 74 percent / n-Bu3P / tetrahydrofuran / 3 h / 20 °C 2: 55 percent / NaH / dimethylformamide / 6 h / 20 °C 3: 46 percent / monoperoxyphthalic acid magnesium salt (MMPP) / methanol / 0.5 h / 0 °C View Scheme

1: 97 percent / LiAlH4 / tetrahydrofuran / 1 h / 0 °C 2: 74 percent / n-Bu3P / tetrahydrofuran / 3 h / 20 °C 3: 55 percent / NaH / dimethylformamide / 6 h / 20 °C 4: 46 percent / monoperoxyphthalic acid magnesium salt (MMPP) / methanol / 0.5 h / 0 °C View Scheme

1: 55 percent / NaH / dimethylformamide / 6 h / 20 °C 2: 46 percent / monoperoxyphthalic acid magnesium salt (MMPP) / methanol / 0.5 h / 0 °C View Scheme

1: 74 percent / n-Bu3P / tetrahydrofuran / 3 h / 20 °C 2: 55 percent / NaH / dimethylformamide / 6 h / 20 °C 3: 46 percent / monoperoxyphthalic acid magnesium salt (MMPP) / methanol / 0.5 h / 0 °C View Scheme