2-Fluoro-5-(trifluoromethyl)phenyl isocyanate → n-{4-[4-Amino-7-(4-pyridinyl)thieno[3,2-c]pyridin-3-yl]phenyl}-n'-[2-fluoro-5-(trifluoromethyl)phenyl]urea

HRID 2390629Notes

Reaction equation

HRID 2390629 reaction equation
[NH2:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[C:12]3[C:13]([NH2:23])=[N:14][CH:15]=[C:16]([C:17]4[CH:22]=[CH:21][N:20]=[CH:19][CH:18]=4)[C:11]=3[S:10][CH:9]=2)=[CH:4][CH:3]=1.[F:24][C:25]1[CH:30]=[CH:29][C:28]([C:31]([F:34])([F:33])[F:32])=[CH:27][C:26]=1[N:35]=[C:36]=[O:37]>COCCOC.C1COCC1.O>[NH2:23][C:13]1[C:12]2[C:8]([C:5]3[CH:4]=[CH:3][C:2]([NH:1][C:36]([NH:35][C:26]4[CH:27]=[C:28]([C:31]([F:32])([F:34])[F:33])[CH:29]=[CH:30][C:25]=4[F:24])=[O:37])=[CH:7][CH:6]=3)=[CH:9][S:10][C:11]=2[C:16]([C:17]2[CH:22]=[CH:21][N:20]=[CH:19][CH:18]=2)=[CH:15][N:14]=1

Participants

6

Reactant 2

HCID 27333802-Fluoro-5-(trifluoromethyl)phenyl isocyanateHCID 184507433-(4-Aminophenyl)-7-(pyridin-4-yl)thieno[3,2-c]pyridin-4-amine

Product 1

HCID 11156716n-{4-[4-Amino-7-(4-pyridinyl)thieno[3,2-c]pyridin-3-yl]phenyl}-n'-[2-fluoro-5-(trifluoromethyl)phenyl]ureaYield 46.2%

Reagents, catalysts & solvents 3

HCID 962WaterSolventHCID 8028TetrahydrofuranSolventHCID 80711,2-DimethoxyethaneSolvent

Procedure

A −20° C. solution of Example 121B (0.18 g, 0.57 mmol) in DME (3 mL) and THF (3 mL) was treated dropwise with 1-fluoro-2-isocyanato-4-(trifluoromethyl)benzene (0.085 mL, 0.57 mmol) and warmed to room temperature over 1.5 hours. The resulting mixture was diluted with water and extracted twice with ethyl acetate. The combined extracts were dried (Na2SO4), filtered, concentrated and the residue was purified by flash column chromatography on silica gel with 3-5% methanoLdichloromethane to provide 138 mg of the desired product. 1H NMR (300 MHz, DMSO-d6) δ 5.74 (s, 2H), 7.44 (d, J=8.48 Hz, 3H), 7.51 (d, J=10.85 Hz, 1H), 7.55 (s, 1H), 7.64 (d, J=8.82 Hz, 2H), 7.71-7.72 (m, 1H), 7.74 (d, J=1.70 Hz, 1H), 8.10 (s, 1H), 8.64 (dd, J=7.29, 2.20 Hz, 1H), 8.67-8.69 (m, 1H), 8.70 (d, J=1.70 Hz, 1H), 8.98 (d, J=2.71 Hz, 1H), 9.40 (s, 1H); MS (ESI(+)) m/e 524 (M+H)+.

Workup

  1. extractionextracted twice with ethyl acetate
  2. dry with materialThe combined extracts were dried (Na2SO4)
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customthe residue was purified by flash column chromatography on silica gel with 3-5% methanoLdichloromethane

Sources & evidence

ORD record
ord-421fadc44a7042fabec278f53c64ed0c
Source dataset
uspto-grants-2012_09
Patent number
US08273736B2

Reaction notes

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