Diisopropylethylamine → (S)-1-(5-tert-butylisoxazol-3-yl)-3-(3-(7-(3-(3-hydroxypyrrolidin-1-yl)propoxy)-6-methoxyquinazolin-4-yloxy)phenyl)urea

HRID 871304Notes

Reaction equation

HRID 871304 reaction equation
[C:1]([C:5]1[O:9][N:8]=[C:7]([NH:10][C:11]([NH:13][C:14]2[CH:19]=[CH:18][CH:17]=[C:16]([O:20][C:21]3[C:30]4[C:25](=[CH:26][C:27]([O:33][CH2:34][CH2:35][CH2:36]Cl)=[C:28]([O:31][CH3:32])[CH:29]=4)[N:24]=[CH:23][N:22]=3)[CH:15]=2)=[O:12])[CH:6]=1)([CH3:4])([CH3:3])[CH3:2].[NH:38]1[CH2:42][CH2:41][C@H:40]([OH:43])[CH2:39]1.C(N(CC)C(C)C)(C)C>[I-].C([N+](CCCC)(CCCC)CCCC)CCC.CN(C)C=O>[C:1]([C:5]1[O:9][N:8]=[C:7]([NH:10][C:11]([NH:13][C:14]2[CH:19]=[CH:18][CH:17]=[C:16]([O:20][C:21]3[C:30]4[C:25](=[CH:26][C:27]([O:33][CH2:34][CH2:35][CH2:36][N:38]5[CH2:42][CH2:41][C@H:40]([OH:43])[CH2:39]5)=[C:28]([O:31][CH3:32])[CH:29]=4)[N:24]=[CH:23][N:22]=3)[CH:15]=2)=[O:12])[CH:6]=1)([CH3:4])([CH3:3])[CH3:2]

Participants

6

Reactant 3

HCID 81531DiisopropylethylamineHCID 2733874(3S)-pyrrolidin-3-olHCID 668760291-(5-Tert-butyl-isoxazol-3-yl)-3-{3-[7-(3-chloro-propoxy)-6-methoxy-quinazolin-4-yloxy]-phenyl}-urea

Product 1

HCID 44243222(S)-1-(5-tert-butylisoxazol-3-yl)-3-(3-(7-(3-(3-hydroxypyrrolidin-1-yl)propoxy)-6-methoxyquinazolin-4-yloxy)phenyl)ureaYield 14.3%

Reagents, catalysts & solvents 2

HCID 67553Tetrabutylammonium IodideCatalystHCID 6228DimethylformamideSolvent

Procedure

A stirred solution of (1-(5-tert-butyl-isoxazol-3-yl)-3-{3-[7-(3-chloro-propoxy)-6-methoxy-quinazolin-4-yloxy]-phenyl}-urea from Example 27B (102 mg, 0.194 mmol), (S)-3-pyrrolidinol (51 mg, 0.582 mmol), N,N-diisopropylethylamine (75 mg, 0.582 mmol) and tetrabutylammonium iodide (71 mg, 0.194 mmol) in dry N,N-dimethylformamide (5 mL) was heated at 60° C. for 20 h. After cooling to room temperature, the reaction mixture was partitioned between water (50 mL) and ethyl acetate (50 mL) and the organic layer was separated, washed with brine (50 mL), dried (MgSO4) and concentrated under reduced pressure. The residue was purified by preparative HPLC (using a phenyl-hexyl reverse phase column, eluted with gradient of solvent B=0.05% HOAC/CH3CN and solvent A=0.05% HOAc/H2O). The combined fractions were washed with saturated aqueous NaHCO3 and the aqueous layer extracted with a mixture of 20% methanol in dichloromethane (2×50 mL). Concentration under reduced pressure afforded (S)-1-(5-tert-butylisoxazol-3-yl)-3-(3-(7-(3-(3-hydroxypyrrolidin-1-yl)propoxy)-6-methoxyquinazolin-4-yloxy)phenyl)urea as a colorless solid (16 mg, 14%). 1H NMR (300 MHz, CDCl3) δ 8.59 (brs, 1H), 7.68 (brs, 1H), 7.52-7.55 (m, 2H), 7.26-7.35 (m, 4H), 6.95 (m, 1H), 6.11 (s, 1H), 4.34-4.40 (m, 3H), 4.04 (s, 3H), 3.00-3.20 (m, 2H), 2.84 (m, 1H), 2.67-2.68 (m, 2H), 2.50 (m, 1H), 2.10-2.30 (m, 3H), 1.80 (m, 1H), 1.51 (m, 1H), 1.26 (s, 9H); LC-MS (ESI) m/z 577 (M+H)+.

Workup

  1. customthe reaction mixture was partitioned between water (50 mL) and ethyl acetate (50 mL)
  2. customthe organic layer was separated
  3. washwashed with brine (50 mL)
  4. dry with materialdried (MgSO4)
  5. concentrationconcentrated under reduced pressure
  6. customThe residue was purified by preparative HPLC (
  7. washeluted with gradient of solvent B=0.05% HOAC/CH3CN and solvent A=0.05% HOAc/H2O)
  8. washThe combined fractions were washed with saturated aqueous NaHCO3
  9. extractionthe aqueous layer extracted with a mixture of 20% methanol in dichloromethane (2×50 mL)
  10. concentrationConcentration under reduced pressure

Sources & evidence

ORD record
ord-7c899f51f4bf4b87afbe46567bf19bf0
Source dataset
uspto-grants-2015_03
Patent number
US08969587B2

Reaction notes

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