作者:Shuichi Oi、Ken'ichi Matsunaga、Tetsutaro Hattori、Sotaro Miyano
DOI:10.1055/s-1993-25965
日期:——
Two syntheses of 1,1′-binaphthyl-2,2′-dicarboxylic acid (4) in good yields are presented via the oxidation of the 2′-methyl substituent of isopropyl 2′-methyl-1,1′-binaphthyl-2-carboxylate (8), which is readily obtainable by the reaction of 2-methyl-1-naphthyl Grignard reagent 7 with isopropyl 1-isopropoxy-2-naphthoate (6).
本文介绍了1,1′-联萘-2,2′-二羧酸(4)的两种合成方法,均以较高收率获得。这两种方法是通过氧化异丙基2′-甲基-1,1′-联萘-2-羧酸酯(8)的2′-甲基取代基实现的,而异丙基2′-甲基-1,1′-联萘-2-羧酸酯(8)可由2-甲基-1-萘基格氏试剂7与异丙基1-异丙氧基-2-萘甲酸酯(6)反应制得。