Trifluoroacetic acid → HCID 66591104, compound

HRID 1092278Notes

Reaction equation

HRID 1092278 reaction equation
C(OC([CH2:8][NH:9][C:10]1[CH:11]=[C:12]([C:16]2[N:21]=[CH:20][C:19]([CH:22]=[CH:23][C:24]([O:26][CH2:27][CH3:28])=[O:25])=[CH:18][CH:17]=2)[CH:13]=[CH:14][CH:15]=1)=O)(C)(C)C.FC(F)(F)C(O)=O.C(=O)([O-])O.[Na+]>CO.ClCCl.[Pd]>[CH3:8][NH:9][C:10]1[CH:11]=[C:12]([C:16]2[N:21]=[CH:20][C:19]([CH2:22][CH2:23][C:24]([O:26][CH2:27][CH3:28])=[O:25])=[CH:18][CH:17]=2)[CH:13]=[CH:14][CH:15]=1

Participants

7

Reactant 3

HCID 6422Trifluoroacetic acidHCID 516892Sodium BicarbonateHCID 66591328HCID 66591328, compound

Product 1

HCID 66591104HCID 66591104, compoundYield 112%

Reagents, catalysts & solvents 3

HCID 23938PalladiumCatalystHCID 887MethanolSolventHCID 6344DichloromethaneSolvent

Procedure

A solution of 852 mg (2.23 mmol) of ethyl 3-{6-[3-(tert-butoxycarbonylmethylamino)phenyl}pyrid-3-yl}acrylate in 10 mL of methanol is stirred for 4 hours at room temperature in the presence of 100 mg of 10% palladium-on-charcoal under a hydrogen atmosphere. The catalyst is filtered off and the solvents are then evaporated off. The oil obtained is dissolved in 15 mL of dichloromethane. 2 mL of trifluoroacetic acid are added and the reaction mixture is stirred for 4 hours at room temperature. The reaction is stopped by adding 100 mL of saturated sodium hydrogen carbonate solution and is then extracted with ethyl acetate. The organic phases are combined and dried over sodium sulfate. The solvents are evaporated off and the residue is then chromatographed on silica gel (70/30 heptane/ethyl acetate). 710 mg of ethyl 3-[6-(3-methylaminophenyl)pyrid-3-yl]propanoate are obtained. Yield=68%.

Workup

  1. filtrationThe catalyst is filtered off
  2. customthe solvents are then evaporated off
  3. customThe oil obtained
  4. extractionis then extracted with ethyl acetate
  5. dry with materialdried over sodium sulfate
  6. customThe solvents are evaporated off
  7. customthe residue is then chromatographed on silica gel (70/30 heptane/ethyl acetate)

Sources & evidence

ORD record
ord-8d211d34ad754afcac0d35ce90ad6969
Source dataset
uspto-grants-2012_03
Patent number
US08129416B2

Reaction notes

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