<b>The Wallach Rearrangement. I. The Behavior of 4-Substituted Azoxybenzenes in Strongly Acidic Solution</b>
作者:Chi-Sun. Hahn、H. H. Jaffe
DOI:10.1021/ja00865a013
日期:1962.3
The rearrangement reaction of azoxybenzenes into hydroxyazobenzenes in strongly acidic solution has been studied by an U. V. spectrophotometric method and by isolation of the rearranged compound. In all cases under investigation, it appeared that the oxygen atom in the azoxy group migrated to the unsubstituted ring, depending neither on the substituent already present in the other ring, nor on the
通过紫外分光光度法和重排化合物的分离研究了偶氮苯在强酸性溶液中重排为羟基偶氮苯的反应。在所研究的所有情况下,似乎偶氮氧基中的氧原子迁移到未取代的环上,这既不取决于另一个环中已经存在的取代基,也不取决于氧原子与合适位置之间的距离;而氧迁移到的开环中的邻位或对位位置取决于另一个环中已经存在的取代基。在除 - 和 -4- 甲基偶氮苯之外的所有化合物中,氧原子迁移到对位。在和-4-甲基偶氮苯的情况下,氧原子迁移到未取代环的邻位。