Реакция #554585

Уравнение реакции

4-(4-{6-amino-5-[(R)-1-(2,6-dichloro-3-fluoro-phenyl)-ethoxy]-pyridin-3-yl}-pyrazol-1-yl)-piperidine-1-carboxylic acid tert-butyl ester

dioxane

→

3-[(R)-1-(2,6-dichloro-3-fluoro-phenyl)-ethoxy]-5-(1-piperidin-4-yl-1H-pyrazol-4-yl)-pyridin-2-ylamine acetate

Выход 78.0%

Растворители

methanol

Условия реакции

Обработка

1. 1
   ДругоеThe solvents were evaporated
2. 2
   workup.DISSOLUTIONthe residue was dissolved in methanol
3. 3
   Другоеpurified on a reversed phase C-18 preparative HPLC
4. 4
   Промывкаeluting with acetonitrile/water with 0.1% acetic acid from 5% to 30% with a linear gradient

Методика

To a solution of 4-(4-{6-amino-5-[(R)-1-(2,6-dichloro-3-fluoro-phenyl)-ethoxy]-pyridin-3-yl}-pyrazol-1-yl)-piperidine-1-carboxylic acid tert-butyl ester (566.7 mg, 1.03 mmol) in methanol (5 mL) or dichlorometha[pi]e (30 mL) was added 4N HCI/dioxane (15 mL). The solution was stirred for about 1 hour or until the de-protection was complete. The solvents were evaporated and the residue was dissolved in methanol and purified on a reversed phase C-18 preparative HPLC eluting with acetonitrile/water with 0.1% acetic acid from 5% to 30% with a linear gradient. After lyophilization, 3-[(R)-1-(2,6-dichloro-3-fluoro-phenyl)-ethoxy]-5-(1-piperidin-4-yl-1H-pyrazol-4-yl)-pyridin-2-ylamine acetate was obtained as a white solid (410 mg, 78% yield, 100% HPLC purity, 96.4% ee). 1H NMR (DMSO-d6, 400 MHz) δ 7.84 (s, 1H), 7.68 (d, 1H), 7.50 (dd, 1H), 7.46 (s, 1H), 7.37 (t, 1H), 6.83 (d, 1H), 6.02 (q, 1H), 5.57 (bs, 2H), 4.09 (m, 1H), 2.98 (m, 2H), 2.53 (m, 2H), 1.88 (m, 2H), 1.82 (s, 3H), 1.73 (d, 3H), 1.70 (m, 2H). MS m/e 450 (M+1)+.

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