Citric Acid → HCID 71187264, compound

Participants

Reaction Steps

Lithium hydroxide hydrate (1.9 g, 45 mmol) was added to 50 mL THF and 15 mL water. Then 2-methyl-2-((2-(1-tosyl-1H-pyrrolo[2,3-b]pyridin-3-yl)pyrimidin-4-yl)amino)butanoate was added and the mixture was heated to reflux for 18 hours. The reaction was cooled to rt and and 50 mL 1M citric acid solution was added. The mixture was extracted with 3×100 mL ethyl acetate where upon a white precipitate formed in the aqueous layer. The product was then filtered from the aqueous layer and dried under vacuum affording 1.6 g (68%) 2-((2-(1H-pyrrolo[2,3-b]pyridin-3-yl)pyrimidin-4-yl)amino)-2-methylbutanoic acid as white solid. 1H NMR (300 MHz, MeOD) 8.87 (dd, 1H), 8.32 (m, 2H), 7.94 (d, 1H), 3.31 (m, 3H), 2.80 (q, 1H), 2.29-1.95 (m, 2H), 1.68 (s, 3H), 0.96 (t, 3H). m/e m+1=312.22.

Provenance & Evidence