反应详情

Dissolve N-methyl-5-(1-methyl-1H-imidazol-2-yl)-N-propyl-isophthalamic acid methyl ester (100 mg, 0.32 mmol) in methanol (10 mL). Dropwise add 1 N lithium hydroxide (0.38 mL) and stir overnight at room temperature. Add 2 N NaOH (0.1 mL) and stir for 48 h at room temperature. Acidify the mixture to about pH=6 by DOWEX® 50WX2-100 ion exchange resin and filter. Concentrate filtrate and lyophilize (1:1 acetonitrile:water) to give the title compound.

1. filtrationfilter