| 摘要 |
<p>Method for preparing fluoroaniline compounds (I) comprises: (a) reacting a haloazobenzene (III) with an ionic fluoride to form a fluoroazobenzene (IV); and (b) reducing (IV). Method for preparing fluoroaniline compounds of formula (I) comprises: (a) reacting a haloazobenzene of formula (III) with an ionic fluoride to form a fluoroazobenzene of formula (IV); and (b) reducing (IV). [Image] [Image] m : 0-(5-n-p); n : 1-4; p : 0-2, provided n+p is at most 4; R 1>hydrogen, fluoro, 1-12C (fluoro) alkyl, 5-14C aryl, 6-15C aralkyl, 1-12C fluoroalkylthio, 1-12C fluoroalkoxy, 1-12C alkylsulfonyl or a group -AQ; A : bond or 1-8C (fluoro)alkylene; Q : cyano, COOR 2>, COHal 2>, CON(R 2>) 2, CONH 2or -B'-R 2>; B' : oxygen or NR 2>; R 2>1-8C alkyl, 6-15C aralkyl or 5-14C aryl, or N(R 2>) 2is a cyclic amino residue with a total of 4-12C; Hal 1>chloro or bromo; and Hal 2>is not defined. An independent claim is also included for the following new compounds:2,2'-dichloro-; 2,2',6,6'-tetrachloro- and 2,2',4,4',6,6'-hexachloro-3,3'-bis(trifluoromethyl)azobenzene; 4,4'-dichloro-2.2'-bis(trifluoromethyl)azobenzene; 2,2'-difluoro-, 2,2',6,6'-tetrafluoro- and 2,2',4,'6,6'-hexafluoro-3,3'-bis(trifluoromethyl)azobenzene, and 4,4'-difluoro-2,2'-bis(trifluoromethyl)azobenzene.</p> |
