When 2-aminophenylsulfonylacetic acid (3) was heated under reflux in an excess of dilute sodium hydroxide solution, the only product identified was 2-methylsulfonylaniline (6). When 2-nitrophenyl-sulfonylacetic acid was treated under the same conditions, the major products identified were 2-methyl-sulfonylnitrobenzene (7), 2-nitrophenol (8), and orthanilic acid (13); minor products of this reaction were 6 and 3-methylsulfonyl-3′-nitro-4-amino-4′-hydroxybiphenyl (12). The same products were obtained although the yields were different when 7 was boiled with alkali, but the reaction of 4-methylsulfonyl-nitrobenzene (15) with alkali was less complex and 4-nitrophenol (16) was the only major product. The biphenyl 12 was also formed in small yield when N-(2-methylsulfonylphenyl)hydroxylamine (19) was treated with alkali and its formation in these reactions was investigated in detail. It was concluded that 12 arises from 7 and 19, but it could also be prepared from 19 and 2-chloro- or better, 2-fluoronitrobenzene, in alkaline solution, and based on all these observations, a mechanism for its formation is suggested. The genesis of the various other products is also discussed. Reference is made to the infrared spectra of sulfones.
当2-氨基苯磺酸乙酸(3)在过量稀释的氢氧化钠溶液中回流加热时,唯一鉴定出的产物是2-甲基磺酰苯胺(6)。当2-硝基苯磺酸乙酸在相同条件下处理时,鉴定出的主要产物是2-甲基磺酰硝基苯(7)、2-硝基酚(8)和邻苯二胺酸(13);该反应的次要产物是6和3-甲基磺酰-3'-硝基-4-氨基-4'-羟基联苯(12)。当7与碱煮沸时,尽管收率不同,但得到了相同的产物,而4-甲基磺酰硝基苯(15)与碱的反应则较为简单,4-硝基酚(16)是唯一的主要产物。当N-(2-甲基磺酰苯基)羟胺(19)在碱性条件下处理时,也会以较小的产率形成联苯(12),并对这些反应中的形成进行了详细研究。结论是12来源于7和19,但也可以从19和2-氯-或更好地,2-氟硝基苯在碱性溶液中制备,并基于所有这些观察,提出了其形成机制。还讨论了其他各种产物的起源。提到了磺酮的红外光谱。