Trifluoroacetic acid → 1-(4-(2-(2-aminopyridin-4-yl)ethoxy)naphthalen-1-yl)-3-(3-tert-butyl-1-p-tolyl-1H-pyrazol-5-yl)urea

HRID 2067060Notes

Reaction equation

HRID 2067060 reaction equation
C(OC(=O)[NH:7][C:8]1[CH:13]=[C:12]([CH2:14][CH2:15][O:16][C:17]2[C:26]3[C:21](=[CH:22][CH:23]=[CH:24][CH:25]=3)[C:20]([NH:27][C:28]([NH:30][C:31]3[N:35]([C:36]4[CH:41]=[CH:40][C:39]([CH3:42])=[CH:38][CH:37]=4)[N:34]=[C:33]([C:43]([CH3:46])([CH3:45])[CH3:44])[CH:32]=3)=[O:29])=[CH:19][CH:18]=2)[CH:11]=[CH:10][N:9]=1)(C)(C)C.C(O)(C(F)(F)F)=O>C(Cl)Cl>[NH2:7][C:8]1[CH:13]=[C:12]([CH2:14][CH2:15][O:16][C:17]2[C:26]3[C:21](=[CH:22][CH:23]=[CH:24][CH:25]=3)[C:20]([NH:27][C:28]([NH:30][C:31]3[N:35]([C:36]4[CH:37]=[CH:38][C:39]([CH3:42])=[CH:40][CH:41]=4)[N:34]=[C:33]([C:43]([CH3:46])([CH3:45])[CH3:44])[CH:32]=3)=[O:29])=[CH:19][CH:18]=2)[CH:11]=[CH:10][N:9]=1

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 58416761tert-butyl-4-(2-(4-(3-(3-tert-butyl-1-p-tolyl-1H-pyrazol-5-yl)ureido) naphthalen-1-yloxy)ethyl)pyridin-2-ylcarbamate

Product 1

HCID 584167451-(4-(2-(2-aminopyridin-4-yl)ethoxy)naphthalen-1-yl)-3-(3-tert-butyl-1-p-tolyl-1H-pyrazol-5-yl)ureaYield 102%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a suspension of tert-butyl-4-(2-(4-(3-(3-tert-butyl-1-p-tolyl-1H-pyrazol-5-yl)ureido) naphthalen-1-yloxy)ethyl)pyridin-2-ylcarbamate (14) (1.35 g, 2.20 mmol) in DCM (10 mL) was added TFA (10 mL). After stirring at RT for 2 hr, the volatiles were evaporated and the residue was taken up in EtOAc (50 mL) and extracted with saturated aq NaHCO3 (50 mL). The layers were separated; the organic was washed with brine (50 mL), dried and evaporated to give 1-(4-(2-(2-aminopyridin-4-yl)ethoxy)naphthalen-1-yl)-3-(3-tert-butyl-1-p-tolyl-1H-pyrazol-5-yl)urea (Intermediate D) as a pale pink solid (1.20 g, 100%): m/z 535 (M+H)+ (ES+).

Workup

  1. customthe volatiles were evaporated
  2. extractionextracted with saturated aq NaHCO3 (50 mL)
  3. customThe layers were separated
  4. washthe organic was washed with brine (50 mL)
  5. customdried
  6. customevaporated

Sources & evidence

ORD record
ord-4cbc30b169204d128846234b31e4a631
Source dataset
uspto-grants-2012_10
Patent number
US08293748B2

Reaction notes

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