Triethylamine → 2,6-Dinitro-N-ethoxy-p-toluidine

関与物質

反応手順

A suspension of 10.0 g. (0.046 mole) of 2,6-dinitro-4-methylchlorobenzene in 100 ml. of methanol was prepared, and to the suspension there was added 7.6 g. (0.092 mole) of ethoxyamine hydrochloride, and 13.9 g. (0.138 mole) of triethylamine. The reaction mixture was stirred for about 30 minutes at room temperature and then heated and stirred for about 2-3 hours, checking samples from the mixture by NMR at half-hour intervals to follow the progress of the reaction. At this time an additional 16.7 g. (0.20 mole) of ethoxyamine hydrochloride was added, and the reaction mixture was stirred and refluxed for about 24 hours. An NMR spectrum of the reaction mixture indicated the presence of the desired product in about 70 percent yield. The reaction product mixture was poured over a mixture of ice and water, and the aqueous mixture filtered. The solid obtained was recrystallized from petroleum ether (b.p. 60°-71° C.) to yield 5.5 g. of product having a melting point of about 64°-66° C. The product was identified by its NMR spectrum as 2,6-dinitro-N-ethoxy-p-toluidine.

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