Phosphorus oxide (P4O10) → HCID 67429406, compound

Participants

Reaction Conditions

Reaction Steps

A suspension of methyl(1S,4R)-4-hydroxy-2,2-dimethyl-4-[5-(3-methyl-5-{[4-(trifluoromethyl)pyrimidin-2-yl]amino}phenyl)-1,3-thiazol-2-yl]cyclohexanecarboxylic acid (200 mg, 0.38 mmol) in phosphorous pentoxide (2.2 g, 15.4 mmol) was heated at 65° C. for 3 hours. The resulting mixture was cooled to room temperature, slowly poured into saturated aqueous sodium bicarbonate, and extracted with ethyl acetate (2×). The combined organic layers were dried over magnesium sulfate, filtered, and concentrated under reduced pressure. Purification via silica gel chromatography (ethyl acetate/hexanes) afforded methyl 2,2-dimethyl-4-[5-(3-methyl-5-{[4-(trifluoromethyl)pyrimidin-2-yl]amino}phenyl)-1,3-thiazol-2-yl]cyclohex-3-ene-1-carboxylate (141 mg, 0.28 mmol, 73% yield) as a colorless oil. MS ESI: [M H] m/z 503.1.

Provenance & Evidence