Ethyl isocyanate → HCID 66721448, compound

HRID 1640182Notes

Reaction equation

HRID 1640182 reaction equation
[NH2:1][C:2]1[CH:7]=[C:6]([O:8][C:9]2[CH:18]=[C:17]3[C:12]([CH2:13][CH2:14][CH:15]([C:19]([NH:21][C:22]4[CH:27]=[CH:26][CH:25]=[C:24]([C:28]([CH3:31])([CH3:30])[CH3:29])[CH:23]=4)=[O:20])[CH2:16]3)=[CH:11][CH:10]=2)[CH:5]=[CH:4][N:3]=1.[N:32]([CH2:35][CH3:36])=[C:33]=[O:34]>C1COCC1.O>[C:28]([C:24]1[CH:23]=[C:22]([NH:21][C:19]([CH:15]2[CH2:14][CH2:13][C:12]3[C:17](=[CH:18][C:9]([O:8][C:6]4[CH:5]=[CH:4][N:3]=[C:2]([NH:1][C:33]([NH:32][CH2:35][CH3:36])=[O:34])[CH:7]=4)=[CH:10][CH:11]=3)[CH2:16]2)=[O:20])[CH:27]=[CH:26][CH:25]=1)([CH3:31])([CH3:30])[CH3:29]

Participants

5

Reactant 2

HCID 8022Ethyl isocyanate3×HCID 58902256HCID 58902256, compound

Product 1

HCID 66721448HCID 66721448, compound

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8028TetrahydrofuranSolvent2×

Procedure

To a solution of 7-[(2-aminopyridin-4-yl)oxy]-N-(3-tert-butylphenyl)-1,2,3,4-tetrahydronaphthalene-2-carboxamide (0.183 g, 0.044 mmol) in THF (4.5 mL) under an atmosphere of nitrogen at 0° C. was added isocyanatoethane (0.035 mL, 0.44 mmol) in THF (0.2 mL) dropwise. The reaction mixture was allowed to warm to rt. After 3 h, additional isocyanatoethane (0.104 mL, 1.32 mmol) was added, and after 4 h isocyanatoethane (0.104 mL, 1.32 mmol) was added again. The reaction mixture was heated at 50° C. for 4 h and then diluted with water. The mixture was extracted with EtOAc. The organic solutions were combined, washed with water and brine, and dried over Na2SO4. The solution was filtered and concentrated. The residue was purified by column chromatography and then the product dissolved in DCM/MeOH. 2M HCl in Et2O was added and the mixture was concentrated to give N-(3-tert-butylphenyl)-7-[(2-{[(ethylamino)carbonyl]amino}-pyridin-4-yl)oxy]-1,2,3,4-tetrahydronaphthalene-2-carboxamide I-370 as its HCl salt (143 mg, 62%). 1H NMR (300 MHz, d6-DMSO; HCl salt) δ: 10.02 (s, 1H), 8.16 (d, 1H), 7.65 (dd, 1H), 7.49 (d, 2H), 7.17-7.28 (m, 2H), 6.95-7.09 (m, 2H), 6.87 (d, 1H), 6.70 (s, 1H), 3.10-3.20 (, 2H), 2.72-2.97 (m, 5H), 2.09 (d, 1H), 1.71-1.81 (m, 1H), 1.26 (s, 9H), and 1.06 (dd, 3H). LCMS: (FA) ES+ 487.4, ES− 485.3.

Workup

  1. temperatureThe reaction mixture was heated at 50° C. for 4 h
  2. extractionThe mixture was extracted with EtOAc
  3. washwashed with water and brine
  4. dry with materialdried over Na2SO4
  5. filtrationThe solution was filtered
  6. concentrationconcentrated
  7. customThe residue was purified by column chromatography
  8. dissolutionthe product dissolved in DCM/MeOH
  9. addition2M HCl in Et2O was added
  10. concentrationthe mixture was concentrated

Sources & evidence

ORD record
ord-ee27f33eecfb47179b04973baa1498cc
Source dataset
uspto-grants-2012_02
Patent number
US08110687B2

Reaction notes

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