Trifluoroacetic acid → HCID 68223934, compound

Participants

Reaction Steps

A solution of 565 (523 mg, 1.83 mmol) and TFA (5 ml) in DCM (15 ml) was stirred at rt for 3.5 h. The reaction mixture was concentrated (azeotropes with DCM), diluted with water, stirred for 10 min, and the pH was adjusted to around 9 with a saturated aqueous solution of sodium bicarbonate and 1N NaOH. The alkaline solution was extracted with DCM; the extract was dried over anhydrous magnesium sulfate, filtered, and concentrated under high vacuum to afford the desired product 566 (314 mg, 1.68 mmol, 92% yield) as a yellow oil that was used crude in the next step without any further purification. MS (m/z): 187.2 (M+H).

Provenance & Evidence