Anthraquinone dyes. Part IV. Nitration of 2-(3-chloro-4-methyl-benzoyl)benzoic acid
作者:J. Arient、J. Šlosar、V. Štěrba、K. Obruba
DOI:10.1039/j39670001331
日期:——
principal product of the nitration of 2-(3-chloro-4-methylbenzoyl)benzoic acid is 2-(3-chloro-4-methyl-6-nitrobenzoyl)benzoic acid, formed in 70–80% yield. In addition, 10–15% of 2-(3-chloro-4-methyl-2-nitrobenzoyl)- and 2-(3-chloro-4-methyl-5-nitrobenzoyl)-benzoic acid are formed. This result is in disagreement with a semiquantitative estimate, based on sigma constants, from which 2-(3-chloro-4-methyl-
2-(3-氯-4-甲基苯甲酰基)苯甲酸硝化的主要产物是2-(3-氯-4-甲基-6-硝基苯甲酰基)苯甲酸,生成率为70-80%。此外,还会形成10-15%的2-(3-氯-4-甲基-2-硝基苯甲酰基)-和2-(3-氯-4-甲基-5-硝基苯甲酰基)-苯甲酸。该结果与基于sigma常数的半定量估计不一致,从该半定量估计中,2-(3-氯-4-甲基-5-硝基苯甲酰基)-苯甲酸是预期的主要反应产物。在对2-(3-氯-4-甲基-苯甲酰基)苯甲酸进行硝化的研究中,真实的1,4-二氯-2-甲基-,1,2-二氯-3-甲基-和2的标本制备了蒽醌的3-3-二氯-1-甲基衍生物。