its I.R. and U.V. spectra and by independent synthesis to be dipicric acid (3,3′-dihydroxy-2,2′,4,4′,6,6′-hexanitrobiphenyl, III) rather than the 3,3′-dicarboxy-derivative (II) as had been suggested by earlier workers. 3-Hydroxy-2,2′,4,4′6,6′-hexanitrobiphenyl (VI), a low-yield by-product in the aforementioned reaction, is obtained in satisfactory yield as the sole product of the oxidation of 3-methyl-2
从3,3'-二甲基-2,2'4,4'6,6'-六
硝基联苯(I)与
重铬酸盐,
硝酸和
硫酸的混合物的反应产物从其IR和UV光谱显示合成是二
癸酸(3,3'-二羟基-2,2',4,4',6,6'-六
硝基联苯,III),而不是建议的3,3'-二羧基衍
生物(II)由早期的工人。在上述反应中低产率的副产物3-羟基-2,2',4,4'6,6'-六
硝基联苯(VI)以令人满意的产率获得了作为3-氧化的唯一产物。甲基-2,2',4,4'6,6'-六
硝基联苯与
重铬酸-
硝酸-
硫酸的混合物。