Synthesis and reactions of 1-hydroxy-9,9a-dihydro-1H-imidazo[1,2-a]indol-2-(3H)-ones
作者:Vytas Martynaitis、Rasa Steponavičiūtė、Sonata Krikštolaitytė、Joana Solovjova、Sven Mangelinckx、Norbert De Kimpe、Wolfgang Holzer、Algirdas Šačkus
DOI:10.1016/j.tet.2011.03.044
日期:2011.5
1-Hydroxy-9,9a-dihydro-1H-imidazo[1,2-a]indol-2(3H)-ones, as a new type of azaheterocyclic hydroxamic acids, have been synthesized regioselectively from 1-carbamoylmethyl- or 1-(methoxycarbonyl)methyl-2,3,3-trimethyl-3H-indolium salts by reaction with hydroxylamine in the presence of a strong base. The alkylation and reduction with sodium borohydride of these novel heterocycles have been investigated
1-羟基-9,9a-二氢-1 H-咪唑并[1,2 - a ]吲哚-2(3 H)-酮是一种新型的氮杂杂环异羟肟酸,是由1-氨基甲酰基甲基-或区域选择性地合成的。 1-(甲氧基羰基)甲基-2,3,3-三甲基-3 H-吲哚鎓盐在强碱的存在下与羟胺反应。已经研究了这些新型杂环的烷基化和硼氢化钠的还原。当用质子酸处理时,将1-羟基-或1-烷氧基-9,9a-二氢-1 H-咪唑并[1,2 - a ]吲哚-2(3 H)-的咪唑烷开环得到1- [2-(羟氨基)-2-氧乙基] -2,3,3-三甲基-3 H-吲哚盐。结构分配基于广泛的1 H,13 C和15 N NMR光谱研究和单晶X射线分析。