Diisopropylethylamine → 1-(5-tert-butyl-2-methyl-2H-pyrazol-3-yl)-3-[5-fluoro-2-(3-pyrrolidin-1-ylmethyl-benzo[d]isoxazol-6-yloxy)-benzyl]-urea

HRID 1897461Notes

Reaction equation

HRID 1897461 reaction equation
[F:1][C:2]1[CH:3]=[CH:4][C:5]([O:10][C:11]2[CH:25]=[CH:24][C:14]3[C:15]([CH2:18][N:19]4[CH2:23][CH2:22][CH2:21][CH2:20]4)=[N:16][O:17][C:13]=3[CH:12]=2)=[C:6]([CH:9]=1)[CH2:7][NH2:8].FC(F)(F)C[O:29][C:30](=O)[NH:31][C:32]1[N:33]([CH3:41])[N:34]=[C:35]([C:37]([CH3:40])([CH3:39])[CH3:38])[CH:36]=1.C(N(C(C)C)CC)(C)C>CN(C=O)C>[C:37]([C:35]1[CH:36]=[C:32]([NH:31][C:30]([NH:8][CH2:7][C:6]2[CH:9]=[C:2]([F:1])[CH:3]=[CH:4][C:5]=2[O:10][C:11]2[CH:25]=[CH:24][C:14]3[C:15]([CH2:18][N:19]4[CH2:20][CH2:21][CH2:22][CH2:23]4)=[N:16][O:17][C:13]=3[CH:12]=2)=[O:29])[N:33]([CH3:41])[N:34]=1)([CH3:40])([CH3:38])[CH3:39]

Participants

5

Reactant 3

HCID 81531DiisopropylethylamineHCID 536167862,2,2-Trifluoroethyl N-(5-tert-butyl-2-methyl-2,3-dihydro-1H-pyrazol-3-ylidene)carbamateHCID 674094985-Fluoro-2-(3-pyrrolidin-1-ylmethyl-benzo[d]isoxazol-6-yloxy)-benzylamine2×

Product 1

HCID 426421011-(5-tert-butyl-2-methyl-2H-pyrazol-3-yl)-3-[5-fluoro-2-(3-pyrrolidin-1-ylmethyl-benzo[d]isoxazol-6-yloxy)-benzyl]-ureaYield 39%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
85 °C

Procedure

5-Fluoro-2-(3-pyrrolidin-1-ylmethyl-benzo[d]isoxazol-6-yloxy)-benzylamine, (6v) (50 mg, 0.15 mmol), (5-tert-butyl-2-methyl-2H-pyrazol-3-yl)-carbamic acid 2,2,2-trifluoro-ethyl ester (a), (68 mg, 0.21 mmol) and diisopropylethylamine (0.038 mL, 0.22 mmol) were combined in DMF (1.5 mL) and heated at 85° C. for 3 hours. The reaction was cooled and concentrated in vacuo and purified by column chromatography (silica, 4% MeOH/CH2Cl2/0.5% Et3N) to provide 1-(5-tert-butyl-2-methyl-2H-pyrazol-3-yl)-3-[5-fluoro-2-(3-pyrrolidin-1-ylmethyl-benzo[d]isoxazol-6-yloxy)-benzyl]-urea (7v) (30 mg, 39%). 1H NMR (400 MHz, CDCl3) δ 7.79 (d, J=8.6 Hz, 1H), 7.16 (d, J=8.6 Hz, 1H), 7.03-6.80 (m, 4H), 6.11 (s, 1H), 5.93 (s, 1H), 5.25 (t, J=8.6 Hz, 1H), 4.38 (d, J=6.3 Hz, 2H), 3.99 (s, 2H), 3.67 (s, 3H), 2.61 (s, 4H), 1.81 (s, 4H), 1.26 (s, 9H); MS (APCI+) m/z 521 (M+H) detected; HPLC (5 to 95%) 2.61 min.

Workup

  1. temperatureThe reaction was cooled
  2. concentrationconcentrated in vacuo
  3. custompurified by column chromatography (silica, 4% MeOH/CH2Cl2/0.5% Et3N)

Sources & evidence

ORD record
ord-1a8c52ba2aa64309bb1b6b7f638ff55b
Source dataset
uspto-grants-2013_08
Patent number
US08518983B2

Reaction notes

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