Ethyl isocyanate → 1-Ethyl-3-[2-(3-ethyl-ureido)-5-pyridin-3-yl-benzothiazol-7-yl]-urea

Participants

Reaction Conditions

Reaction Steps

A stirred mixture of 1-(7-Amino-5-pyridin-3-yl-benzothiazol-2-yl)-3-ethyl-urea (15 mg, 0.048 mmol), ethyl isocyanate (0.03 ml) and dibutyltindiacetate (2 drops) in anhydrous 1,4-dioxane (2 ml) was heated in a sealed vessel at 100° C. for 16 h. After cooling to ambient temperature, the 1-Ethyl-3-[2-(3-ethyl-ureido)-5-pyridin-3-yl-benzothiazol-7-yl]-urea was isolated by Preparative HPLC as a white solid (5.4 mg, 29%).

Provenance & Evidence