Diisopropylethylamine → Tert-butyl 4-{4-methoxy-4-[(1-methylcyclobutyl)carbamoyl]piperidin-1-yl}azepane-1-carboxylate

1-[1-(tert-butoxycarbonyl)azepan-4-yl]-4-methoxypiperidine-4-carboxylic acid (0.163 g, 0.44 mmol) was dissolved in DMF (5 mL) and (1-methyl)cyclobutylamine hydrochloride (0.08 g, 0.66 mmol), HATU (0.25 g, 0.66 mmol) and DIPEA (0.284 g, 0.38 mL, 2.20 mmol) were added. The reaction mixture was stirred at rt overnight under nitrogen. The solvents were removed in vacuo, and the residue was partitioned between DCM and sat. NaHCO3 sol., organic layer washed with sat. NaCl sol. and dried over MgSO4. The solvents were removed in vacuo, and the residue was purified by column chromatography (normal phase, [Biotage SNAP cartridge KP-sil 25 g, 40-63 μm, 60 Å, 50 mL per min, gradient 1% to 6% MeOH in DCM]) to give tert-butyl 4-{4-methoxy-4-[(1-methylcyclobutyl)carbamoyl]piperidin-1-yl}azepane-1-carboxylate (0.025 g, 13.4%) as a pale yellow oil.

1. customThe solvents were removed in vacuo
2. customthe residue was partitioned between DCM and sat. NaHCO3 sol., organic layer
3. washwashed with sat. NaCl sol.
4. dry with materialdried over MgSO4
5. customThe solvents were removed in vacuo
6. customthe residue was purified by column chromatography (normal phase, [Biotage SNAP cartridge KP-sil 25 g, 40-63 μm, 60 Å, 50 mL per min, gradient 1% to 6% MeOH in DCM])

ORD-Eintrag

ord-6a61081f339d47549529a2e7c4e0de3d

Quelldatensatz

uspto-grants-2015_11

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US09187451B2