Gold-catalyzed redox synthesis of imidazo[1,2-a]pyridines using pyridine N-oxide and alkynes
A mild, catalytic, atom economical synthesis of imidazo[1,2-a]pyridines has been developed: catalytic dichloro(2-pyridinecarboxylato)gold [PicAuCl 2] in the presence of an acid produces a range of imidazo[1,2-a]pyridines in good yields starting
Talbot, Eric P. A.,Richardson, Melodie,McKenna, Jeffrey M.,Toste, F. Dean
supporting information
p. 687 - 691
(2014/04/03)
Synthesis of 5-nitropyridin-2-ylazo push-pull derivatives
A practical method has been devised for the synthesis of previously unknown push-pull azochromophores with 5-nitropyridin-2-yl acceptor moiety from 2-amino-5-nitro-1-oxypyridine.
Kreicberga,Jecs,Kampars
p. 29 - 34
(2008/12/22)
Keratin dyeing compounds, keratin dyeing compositions containing them, and use thereof
Compositions for the oxidative dyeing of keratin fibers, comprising a medium suitable for dyeing and at least one N-oxides of six-membered rings with one or two nitrogen atoms keratin dyeing compound. A method for oxidative dyeing of keratin fibers, comprising applying such compositions in the presence of an oxidizing agent, for a period sufficient to develop the desired coloration.
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Page/Page column 8
(2008/06/13)
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