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- W2950395881 abstract "1-Amino-2-methylindoline is a precursor used in the synthesis of antihypertension drugs. It reacts with monochloramine to lead to the formation of 1-amino-2-methylindole and azo(2-methyl)indoline. These new products have been isolated and characterized by microanalysis, uv, gc/ms, ir, and 1H/13C nmr. The reaction leads to the transient formation of an indolic aminonitrene. 1-Amino-2-methylindole formation proceeds in strongly alkaline medium by rearrangement of a diaziridine intermediate. In neutral or slightly alkaline medium, one obtains a precipitate of tetrazene type (-N-N=N-N-), the azo(2-methyl)indoline. The study of the thermochemical properties shows that tetrazene decomposes towards 150 °C to give the 1,1′-bi(2-methyl)indoline. The stability of the starting reagents and products was the subject of a systematic investigation. A reaction mechanism is proposed." @default.
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- W2950395881 date "2001-07-01" @default.
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- W2950395881 title "Synthesis and characterization of new heterocyclic derivatives by oxidation of 1-amino-2-methylindoline" @default.
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- W2950395881 doi "https://doi.org/10.1002/jhet.5570380412" @default.
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