[EN] PREPARATION OF 3-AMINOALKYL-SUBSTITUTED INDOLE DERIVATIVES FROM PHENYLHYDRAZINES AND AMINOKETONES<br/>[FR] PREPARATION DE DERIVES D'INDOLE A SUBSTITUTION 3-AMINOALKYLE A PARTIR DE PHENYLHYDRAZINES ET D'AMINOCETONES
申请人:SUVEN LIFE SCIENCES LTD
公开号:WO2004041781A1
公开(公告)日:2004-05-21
The present invention relates to a process for the preparation of indole derivatives, particularly those, which are useful as pharmaceutical intermediates. The process involves formation of hydrazone derivative between a phenyl hydrazine and a ketone amine, followed by cyclisation to give desired 2,3-substituted indole derivative in the presence of acid catalyst.
Remote C(sp<sup>3</sup>)–H Oxygenation of Protonated Aliphatic Amines with Potassium Persulfate
作者:Melissa Lee、Melanie S. Sanford
DOI:10.1021/acs.orglett.6b03731
日期:2017.2.3
the development of a method for selective remoteC(sp3)–H oxygenation of protonated aliphatic amines using aqueous potassium persulfate. Protonation serves to deactivate the proximal C(sp3)–H bonds of the amine substrates and also renders the amines soluble in the aqueous medium. These reactions proceed under relatively mild conditions (within 2 h at 80 °C with amine as limiting reagent) and do not
Iron-Catalyzed Oxyfunctionalization of Aliphatic Amines at Remote Benzylic C–H Sites
作者:Curren T. Mbofana、Eugene Chong、James Lawniczak、Melanie S. Sanford
DOI:10.1021/acs.orglett.6b02003
日期:2016.9.2
iron-catalyzed method for the selective oxyfunctionalization of benzylic C(sp3)–H bonds in aliphatic amine substrates. This transformation is selective for benzylic C–H bonds that are remote (i.e., at least three carbons) from the amine functional group. High site selectivity is achieved by in situ protonation of the amine with trifluoroacetic acid, which deactivates more traditionally reactive C–H sites that are
Effects of Neighboring Functional Groups in the Asymmetric Reduction of ω-Substituted Alkyl Phenyl Ketones with Lithium Tri-<i>l</i>-Menthoxyaluminum Hydride
作者:Shozo Yamaguchi、Kuninobu Kabuto
DOI:10.1246/bcsj.50.3033
日期:1977.11
reduction of ω-substituted alkylphenyl ketones, PhCO(CH2)nY, with lithium tri-l-menthoxyaluminum hydride, the effect of the functionalgroups, Y(NR2, OMe, and SMe) on the stereoselectivity was examined in comparison with that of the alkylgroup. Of the functionalgroups tested, the MeO group is more effective in enhancing the stereoselectivity than the NMe2 or SMe group except in the case of n=1.