Synthesis of 1-alkoxy-1,2,3,4-tetra-hydrocarbazoles by mercury(II) mediated heterocyclization of 2-cyclohex-2′-enyl-<i>N</i>-alkylanilines
作者:K. C. Majumdar、U. Das
DOI:10.1139/v96-175
日期:1996.8.1
high yields by the mercury(II) mediated heterocyclization of 2-cyclohex-2′-enyl-N-alkylanilines 2(a–g), which in turn were obtained by the acid-catalyzed amino Claisen rearrangement of 3-N-alkylanilinocyclohexenes 1(a–g). Additional supporting evidence for the structure of product 3 was obtained from chemical transformations. Key words: 1-alkoxy tetrahydrocarbazole, mercury(II) mediated heterocyclization
标题化合物 3(a-i) 是通过汞 (II) 介导的 2-环己-2'-烯基-N-烷基苯胺 2(a-g) 的杂环化以高产率合成的,而后者又是通过酸获得-催化3-N-烷基苯胺基环己烯1(a-g)的氨基克莱森重排。从化学转化中获得了产品 3 结构的其他支持证据。关键词:1-烷氧基四氢咔唑,汞(II)介导的杂环化,氨基克莱森重排,3-N-甲基苯胺基环己烯。
Copper-Catalyzed Aerobic Selective Oxidation of Tetrahydrocarbolines
safe and convenient open-flask copper-catalyzed selective oxidation/functionalization methodology for tetrahydrocarbolines and tetrahydro-β-carbolines that employs atmospheric O2 as the terminal oxidant. The system is applicable to oxidative rearrangement of tetrahydro-β-carbolines, tetrahydrocarboline oxidation to α-alkoxy carbazoles and spirooxindoles, and Witkop oxidation. Mechanistic experiments indicated
我们报告了一种使用大气 O 2作为终端氧化剂的四氢咔啉和四氢-β-咔啉的安全且方便的开瓶铜催化选择性氧化/功能化方法。该体系适用于四氢-β-咔啉的氧化重排,四氢咔啉氧化成α-烷氧基咔唑和螺氧吲哚,以及Witkop氧化。机械实验表明,单电子氧化过程负责可调选择性控制。这种铜催化协议代表了吲哚氧化领域的重大进步。
MAJUMDAR, K. C.;DE, R. N.;SAHA, S., TETRAHEDRON LETT., 31,(1990) N, C. 1207-1208