This invention relates to novel compounds having the formula: ##STR1## wherein; R.sup.1 is fluoro, chloro, bromo, lower-alkyl or nitro, R.sup.2 is lower alkyl, lower alkoxy, fluoro, chloro, bromo, nitro or trifluoromethyl, and m and n are 0-2 with the proviso that when R.sup.1 or R.sup.2 are tertiary butyl or a sterically hindering lower alkyl radical, m and/or n are 1. These compounds are intermediates in the preparation of 2-aminobiphenylacetic acids, esters and metal salts thereof.
这项发明涉及具有以下结构的新化合物:##STR1## 其中;R.sup.1为
氟、
氯、
溴、较低烷基或硝基,R.sup.2为较低烷基、较低烷氧基、
氟、
氯、
溴、硝基或三
氟甲基,m和n为0-2,但当R.sup.1或R.sup.2为三级丁基或有立体阻碍的较低烷基基团时,m和/或n为1。这些化合物是制备
2-氨基联苯乙酸、酯及其
金属盐的中间体。