作者:A. Marxer
DOI:10.1002/hlca.19570400232
日期:——
2,6-Dimethoxy-benzoquinone (11) does not react with amines, such as ethylenimine, at room temperature nor at slightly elevated temperatures contrary to 2,5-dimethoxy-benzoquinone. In the 3,5-dibromo-2,6-dimethoxy-benzoquinone (VI), however, the same, previously unreactive methoxy groups are exchanged by amines. The two remaining bromine atoms can then be replaced by alkoxy or thioalkoxy groups (type
与2,5-二甲氧基-苯醌相反,在室温下或在稍微升高的温度下,2,6-二甲氧基-苯醌(11)不与胺如亚乙基亚胺反应。然而,在3,5-二溴-2,6-二甲氧基-苯醌(VI)中,相同的先前未反应的甲氧基被胺交换。然后可以将剩余的两个溴原子替换为烷氧基或硫代烷氧基(IX型)。讨论了此行为的原因。2,5-二氨基-3,6-二氯-苯醌中的两个卤素原子对胺的进一步处理没有反应性。在2,5-双-酰基氨基-3,6-二氯-苯醌中,卤素基团具有很高的反应性,因此它们被亚乙基亚胺交换,得到XVI型化合物。