The Reaction of Dihalotetramethylbenzenes with Fuming Nitric Acid as a New Convenient Route to Some Dihalotrimethylbenzylic Compounds
作者:Hitomi Suzuki、Kiyomi Nakamura、Michiko Takeshima
DOI:10.1246/bcsj.44.2248
日期:1971.8
the latter in somewhat greater amount. 5,6-Dihalo-1,2,3,4-tetramethylbenzene (dihaloprehnitene) gave 5,6-dihalo-2,3,4-trimethylbenzyl nitrate as the sole nitrooxylation product. The reaction affords a new convenient route to precursors of various polysubstituted benzylic compounds hitherto not easily obtained by ordinary methods. Physical properties of some dihalotrimethylbenzylic compounds (chloride
研究了用发烟硝酸硝化三种异构二氯和二溴四甲基苯得到的产物。3,6-二卤-1,2,4,5-四甲基苯(二卤代脲)主要生成 3,6-二卤-2,4,5-三甲基苄基硝酸酯或 1,2-双(硝基氧甲基)-3,6-二卤- 4,5-二甲苯,取决于反应温度和硝化剂的用量。4,6-二卤-1,2,3,5-四甲基苯(二卤代异丁二烯)生成 3,5-二卤-2,4,6-三甲基苄基硝酸酯和 2,6-二卤-3,4,5-三甲基苄基的混合物硝酸盐,后者的量稍大。5,6-二卤-1,2,3,4-四甲基苯(二卤代戊二烯)得到5,6-二卤-2,3,4-三甲基苄基硝酸盐,作为唯一的硝基酰化产物。该反应为迄今为止通过普通方法不易获得的各种多取代苄基化合物的前体提供了新的便利途径。一些二卤代三甲基苄基化合物(氯化物、硝酸盐、醋酸盐、酒精和双苄基醚)的物理特性已被记录。