申请人:A. H. Robins Company, Incorporated
公开号:US04670566A1
公开(公告)日:1987-06-02
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.
本发明涉及具有以下公式的新化合物:##STR1## 其中;R.sup.1是氟、氯、溴、低碳基或硝基,R.sup.2是低烷基、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为叔丁基或立体阻碍低碳基时,m和/或n为1。这些化合物是制备2-氨基联苯乙酸、酯和金属盐的中间体。