作者:Tetiana Shvydenko、Kostiantyn Nazarenko、Kostiantyn Shvydenko、Sergey Boron、Oleksii Gutov、Andrey Tolmachev、Aleksandr Kostyuk
DOI:10.1016/j.tet.2017.10.053
日期:2017.12
A convenient approach to diazocine derivatives 8,9 starting from 1,2-polymethyle-neimidazolium salts 4 was developed. The polymethylenimidazolium salts 4 are partially reduced with sodium borohydride in DMF to give 5,6,7,7a-tetrahydro-1H-pyrrolo[1,2-a]imidazoles 5 or under more forcing conditions – (sodium triacetoxyborohydride in acetic acid) with cleavage of the endocyclic CN bond affording diamines
开发了一种方便的方法,用于从1,2-聚甲基-亚氨基咪唑鎓盐4开始的重氮衍生物8,9。在DMF中,用硼氢化钠将聚甲基亚乙基咪唑鎓盐4部分还原,得到5,6,7,7a-四氢-1H-吡咯并[1,2- a ]咪唑5或在更强的条件下((乙酸中的三乙酰氧基硼氢化钠)内环C N键的裂解提供二胺6。由化合物5容易制备的叔盐7与NaBH 4和KCN亲核试剂反应,裂解内环N C键形成重氮衍生物8,9。