| 摘要 |
1,232,368. Substituted halophenoxy benzoic acid and derivatives thereof. MOBIL OIL CORP. 23 April, 1970 [25 April, 1969], No. 19510/70. Heading C2C. [Also in Division A5] The invention relates to substituted halophenoxy benzoic acid and derivatives thereof of the general formula wherein X is halogen, n is 1 to 5, and R is hydroxyl, alkoxy (C 1 -C 3 ), aryloxy, chloro, amido, alkylamide (C 1 -C 3 ), dialkylamide (C 1 -C 3 ), or OM in which M is alkali metal (Li, Na, K), alkylammonium (C 1 -C 4 ), or alkanolammonium (C 1 -C 3 ). Compounds claimed per se are methyl 2 - nitro - 5 - (2<SP>1</SP>,4<SP>1</SP>,61 - trichlorophenoxy) benzoate; 2 - nitro - 5 - (2<SP>1</SP>,4<SP>1</SP>,6<SP>1</SP> - trichiorophenoxy) benzoic acid; sodium 2- nitro - 5 - (2<SP>1</SP>,4<SP>1</SP>,61 - trichlorophenoxy) benzoate; methyl 2 - nitro - 5 - (2<SP>1</SP>,4<SP>1</SP>,5<SP>1</SP> - trichlorophenoxy) benzoate; methyl - 2 - nitro - 5 - (2<SP>1</SP>,4<SP>1</SP>- dichlorophenoxy) benzoate. The compounds may be prepared by reacting an alkali metal salt of a halophenol with a 5-halo-2-nitrobenzoic acid or an ester, amide or salt thereof. |
