Nitrogen → 4-[(2,4-Dinitro-phenyl)-methyl-carbamoyl]-butyric acid methyl ester

Participants

Reaction Steps

To a 100 mL round bottom 3-neck flask equipped with stir bar, thermocouple, and N2 sweep were charged 16.67 g (53.6 mmol) of 4-(2,4-dinitro-phenylcarbamoyl)-butyric acid methyl ester and 50 mL (5 volumes vs. dinitroaniline) of acetonitrile at room temperature. To this clear yellow stirred solution was then added 6.09 mL (8.10 g, 64.2 mmol, 1.2 equiv) of dimethyl sulfate and 14.80 g (107 mmol, 2.0 equiv) of K2CO3. The mixture turned dark reddish orange with the addition and exhibited an exotherm of less than 5° C. The reaction was monitored periodically by HPLC Method A and was complete after 22.5 hours at room temperature.

Provenance & Evidence