Diisopropylethylamine → ethyl 1-[2-[4-(2-[3-[5-chloro-2-(difluoromethoxy)phenyl]-4-[pyrazolo[1,5-a]pyrimidine-3-amido]-1H-pyrazol-1-yl]acetyl)piperazin-1-yl]ethyl]piperidine-4-carboxylate

HRID 529798Notes

Reaction equation

HRID 529798 reaction equation
[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([O:29][CH:30]([F:32])[F:31])=[C:6]([C:8]2[C:12]([NH:13][C:14]([C:16]3[CH:17]=[N:18][N:19]4[CH:24]=[CH:23][CH:22]=[N:21][C:20]=34)=[O:15])=[CH:11][N:10]([CH2:25][C:26](O)=[O:27])[N:9]=2)[CH:7]=1.Cl.[N:34]1([CH2:40][CH2:41][N:42]2[CH2:47][CH2:46][CH:45]([C:48]([O:50][CH2:51][CH3:52])=[O:49])[CH2:44][CH2:43]2)[CH2:39][CH2:38][NH:37][CH2:36][CH2:35]1.CCN(C(C)C)C(C)C.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F>CN(C=O)C>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([O:29][CH:30]([F:32])[F:31])=[C:6]([C:8]2[C:12]([NH:13][C:14]([C:16]3[CH:17]=[N:18][N:19]4[CH:24]=[CH:23][CH:22]=[N:21][C:20]=34)=[O:15])=[CH:11][N:10]([CH2:25][C:26]([N:37]3[CH2:36][CH2:35][N:34]([CH2:40][CH2:41][N:42]4[CH2:43][CH2:44][CH:45]([C:48]([O:50][CH2:51][CH3:52])=[O:49])[CH2:46][CH2:47]4)[CH2:39][CH2:38]3)=[O:27])[N:9]=2)[CH:7]=1

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 118522370{3-(5-Chloro-2-difluoromethoxy-phenyl)-4-[(pyrazolo[1,5-a]pyrimidine-3-carbonyl)amino]pyrazol-1-yl}acetic acidHCID 118522660Ethyl 1-[2-(piperazin-1-yl)ethyl]piperidine-4-carboxylate hydrochloride

Product 1

HCID 118522385ethyl 1-[2-[4-(2-[3-[5-chloro-2-(difluoromethoxy)phenyl]-4-[pyrazolo[1,5-a]pyrimidine-3-amido]-1H-pyrazol-1-yl]acetyl)piperazin-1-yl]ethyl]piperidine-4-carboxylate

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of 2-[3-[5-chloro-2-(difluoromethoxy)phenyl]-4-[pyrazolo[1,5-a]pyrimidine-3-amido]-1H-pyrazol-1-yl]acetic acid (150 mg, 0.32 mmol) in DMF (10 mL) was added ethyl 1-[2-(piperazin-1-yl)ethyl]piperidine-4-carboxylate hydrochloride (199 mg, 0.65 mmol), DIEA (126 mg, 0.97 mmol), HATU (148 mg, 0.39 mmol). The resulting solution was stirred at room temperature overnight and concentrated under vacuum. The residue was passed through a short pad of silica gel eluting with 3% MeOH in DCM. The crude product was purified by Prep-HPLC with the following conditions (Prep-HPLC-005): Column, XBridge Prep C18 OBD Column, 5 um, 19*150 mm; mobile phase, water with 0.05% FA and MeCN (18.0% MeCN up to 27.0% in 10 min, up to 95.0% in 1 min, hold 95.0% in 1 min, down to 18.0% in 2 min); Detector, UV 254/220 nm. This resulted in 66.1 mg (27%) of the formic acid salt of ethyl 1-[2-[4-(2-[3-[5-chloro-2-(difluoromethoxy)phenyl]-4-[pyrazolo[1,5-a]pyrimidine-3-amido]-1H-pyrazol-1-yl]acetyl)piperazin-1-yl]ethyl]piperidine-4-carboxylate. LCMS (Method 24) [M+H]+=714.2, RT=2.42 min. 1H NMR (400 MHz, DMSO-d6) δ: (ppm) 9.76 (s, 1H), 9.34 (dd, 1H, J=1.6, 6.8 Hz), 8.69-8.68 (m, 2H), 8.31 (s, 1H), 7.62 (dd, 1H, J=2.8, 8.8 Hz), 7.56 (d, 1H, J=2.4 Hz), 7.46 (d, 1H, J=8.8 Hz), 7.29 (dd, 1H, J=4.4, 6.8 Hz), 7.08 (t, 1H, J=73.2 Hz), 5.23 (m, 2H), 4.03 (q, 2H, J=6.8 Hz), 3.50-3.47 (m, 4H), 2.88-2.85 (m, 2H), 2.52-2.51 (m, 6H), 2.47-2.26 (m, 3H), 2.12-2.07 (m, 2H), 1.80-1.78 (m, 2H), 1.60-1.55 (m, 2H), 1.16 (t, 3H, J=7.2 Hz).

Workup

  1. concentrationconcentrated under vacuum
  2. customThe crude product was purified by Prep-HPLC with the following conditions (Prep-HPLC-005)
  3. waitmobile phase, water with 0.05% FA and MeCN (18.0% MeCN up to 27.0% in 10 min
  4. waitup to 95.0% in 1 min
  5. customin 1 min
  6. waitdown to 18.0% in 2 min)

Sources & evidence

ORD record
ord-a8ef13c07edb469ba3c3bcfab5dce90f
Source dataset
uspto-grants-2016_05
Patent number
US09346815B2

Reaction notes

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