反应详情

2-[2-Nitro-3-(3-nitro-phenylamino)-phenyl]-malonic acid dimethyl ester (1.26 g, 3.24 mmol) is heated in 6 N hydrochloric acid (100 ml) at 110° C. for 10 hours. It is then cooled to room temperature; the precipitate therefore formed is collected by vacuum filtration to give the desired compound: LC-MS: 318.0 (MH+).

1. customthe precipitate therefore formed
2. filtrationis collected by vacuum filtration