Isoamyl Nitrite → N-{4-[6-(2-Iodo-4-trifluoromethyl-phenyl)-pyrimidin-4-yloxy]-benzothiazol-2-yl}-acetamide

Participants

Reaction Conditions

Reaction Steps

To N-{4-[6-(2-amino-4-trifluoromethyl-phenyl)-pyrimidin-4-yloxy]-benzothiazol-2-yl}-acetamide, (Example 151), (0.25 g, 0.56 mmol) was added CsI (0.15 g, 0.56 mmol, Aldrich), 12 (0.071 g, 0.28 mmol, Aldrich), CuI (0.032 g, 0.17 mmol, Aldrich) and ethylene glycol dimethyl ether (6 mL). To the mixture was added isoamyl nitrite (0.45 mL, 3.4 mmol, Aldrich) and the reaction was stirred for 1 h at room temperature, at 65° C. for 3 h, and then at room temperature for 18 h. The reaction mixture was diluted with MeOH (2 M in NH3) and concentrated. The residue was taken up in MeOH and concentrated onto silica gel. Purification by silica gel chromatography (gradient, 0.4 to 1.3% MeOH (2 M in NH3)/CH2Cl2) afforded the title compound as a white solid. Mp: 242-243° C. MS (ESI, pos. ion) m/z: 557.0 (M+1).

Provenance & Evidence