公开(公告)号：US20010014759A1

公开(公告)日：2001-08-16

申请号：US09769797

申请日：2001-01-25

发明人： Albrecht Marhold ,  Jorn Stolting

IPC分类号： C07C051/58 ,  C07C053/38 ,  C07C055/36 ,  C07C057/64 ,  C07C059/00 ,  C07C061/00 ,  C07C062/00 ,  C07C063/00 ,  C07C065/00

CPC分类号： C07C51/60 ,  C07C51/62 ,  C07C63/70 ,  C07C63/72

摘要： 3,5-Bis(trifluoromethyl)benzoyl chlorides optionally substituted with fluorine or chlorine are advantageously prepared by converting 3,5-dimethylbenzoic acids optionally substituted with fluorine or chlorine into the corresponding acid chlorides; completely free-radically chlorinating said chlorides in the side chains, giving 3,5-bis(trichloromethyl)benzoyl chlorides optionally substituted by fluorine or chlorine; fluorinating the latter with anhydrous hydrogen fluoride and/or antimony pentafluoride, giving 3,5-bis(trifluoromethyl)benzoyl fluorides optionally substituted with fluorine or chlorine; and then reacting the 3,5-bis(trifluoromethyl)benzoyl fluorides with silicon tetrachloride in the presence of a further Lewis acid. Some of the 3,5-bis(trihalogenomethyl) and 3,5-dimethylbenzoyl halides which arise as intermediates are novel compounds.

摘要翻译： 任选被氟或氯取代的3,5-双（三氟甲基）苯甲酰氯有利地通过将任选被氟或氯取代的3,5-二甲基苯甲酸转化成相应的酰氯来制备; 完全自由基地氯化侧链中的氯化物，得到任选被氟或氯取代的3,5-双（三氯甲基）苯甲酰氯; 用无水氟化氢和/或五氟化锑氟化后者，得到任选被氟或氯取代的3,5-双（三氟甲基）苯甲酰氟; 然后在另外的路易斯酸的存在下使3,5-双（三氟甲基）苯甲酰氟与四氯化硅反应。 作为中间体产生的一些3,5-二（三卤代甲基）和3,5-二甲基苯甲酰基卤化物是新的化合物。