2,4—二硝基氟苯液相选择性催化氢化的研究

Reasearch an Selectire Catalgtic Hydrogenation of2,4-Dinitrofluorobensene in Liquid Phase

研究以 Ｐｄ Ｃｌ２／ Ｃ＋ Ｆｅ（ Ｏ Ａｃ）２ 为催化剂，乙酸和乙醇为溶剂，在室温和低压下用氢气选择性还原２ ，４ － 二硝基氟苯为２ － 氟－ ５ － 硝基苯胺，选择性还原收率为７６ ．１ ％ ，产品纯度为９９ ．０ ％ 。

The method for the catalytic selective reduction of 2,4-dinitrofluorobenzene in the presence of pdcl 2/c+Fe(oAc) 2 and hydrogen is studied.The reduction reaction is carried out in an acidic medium at room tempreature and low pressure.The yield of 2-fluoro-5-nitro-aniline is 76.1% and the parity is 99.0%.