A novel method for indole skeleton synthesis under mild conditions mediated by samarium(ii) diiodide has been developed.
一种在温和条件下通过镨(II)二碘化物介导的吲哚骨架合成的新方法已经开发出来。
Regiospecific bromination of 3-methylindoles with N-bromosuccinimide
作者:Puwen Zhang、Ruiyan Liu、James M. Cook
DOI:10.1016/0040-4039(95)00478-u
日期:1995.5
The regiospecific bromination of various substituted 3-methylindoles at either C(2) or the C(3) alkyl moiety was accomplished via an electrophilic or free radical bromination process to provide intermediates for indole alkaloid total synthesis. The regiospecificity of the bromination could be controlled by variation of both the substituent and the N(1) protecting group on the indole ring.
Regiospecific Bromination of 3-Methylindoles with NBS and Its Application to the Concise Synthesis of Optically Active Unusual Tryptophans Present in Marine Cyclic Peptides<sup>1</sup>
作者:Ruiyan Liu、Puwen Zhang、Tong Gan、James M. Cook
DOI:10.1021/jo971067g
日期:1997.10.1
A regiospecific bromination of substituted 3-methylindoles at either the C(3) alkyl moiety or the C(2) position was achieved via a free radical bromination or electrophilic process, respectively. The regiospecificity of the bromination could be controlled by variation of both the substituent and the N(1) protecting group on the indole ring. In addition, enantiospecific syntheses of 5-methoxytryptophan
Cobalt-Catalyzed C−H Nitration of Indoles by Employing a Removable Directing Group
作者:Paridhi Saxena、Manmohan Kapur
DOI:10.1002/asia.201800036
日期:2018.4.4
nitration of 3‐substituted indoles, by using the economical and non‐toxic cobalt nitrate hexahydrate [Co(NO3)2⋅6 H2O] as a catalyst and tert‐butyl nitrite (TBN) as the nitro source, is reported. This approach provides a unique methodology involving a site‐selective C−N bond formation for preparation of C‐2 substitutednitro indoles. Utilization of the tBoc as the removable directing group enhances the
温和和有效的C(SP 2)-H的3-取代的吲哚硝化,通过使用经济,无毒的六水合硝酸钴[Co(NO 3)2 ⋅ 6 H 2 O]作为催化剂,叔丁基亚硝酸盐报道了以(TBN)为硝基源。这种方法提供了一种独特的方法,该方法涉及制备C-2取代的硝基吲哚的位点选择性C-N键形成。将t Boc用作可去除的导向基团增强了该方法的合成效用。