Catalytic transfer hydrogenation (CTH) is an effective reduction method, which conducts at a mild reaction condition and with simple facilities comparing to common catalytic hydrogenation.

催化转移加氢是有机合成中一种有效的还原方法，与一般的氢气催化加氢法相比，具有反应条件温和、设备要求低等优点。

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For most reduction reactions concerned, dehalogenation occurred seriously in hydrogenation reaction. Better selectivity was achieved and purer products were prepared in the reduction by Fe.

结果显示，催化加氢工艺会发生脱卤反应，而采用铁粉还原的选择性好，产品纯度高。

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