A convenient synthetic route from isatin N-Mannich bases to nitrogen-containing derivatives of isoindigo |
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| Authors: | Andrei V Bogdanov Vladimir F Mironov Lenar I Musin Rashid Z Musin Dmitry B Krivolapov and Igor A Litvinov |
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| Institution: | (1) A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Research Center, Russian Academy of Sciences, Kazan, Russia |
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| Abstract: | Abstract The reaction of aminomethylisatins (isatin N-Mannich bases) with hexaethylphosphorous triamide leads to the formation of 1,1′-bis(dialkylaminomethyl)-3,3′-bis(indolin-3-ylidene)-2,2′-diones
and 1,1′-bis(1,3-dioxo-1,3-dihydroisoindol-2-ylmethyl)-1H,1′H-3,3′]bisindolylidene-2,2′-dione. |
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