5-(6-Methoxycarbonyl-2,2-dimethyl-2,3-dihydro-benzofuran-4-yloxy)-pyridine-2-carboxylic acid tert-butyl ester → 5-(6-Methoxycarbonyl-2,2-dimethyl-2,3-dihydro-benzofuran-4-yloxy)-pyridine-2-carboxylic acid

HRID 1177143Notes

Reaction equation

HRID 1177143 reaction equation
C([O:5][C:6]([C:8]1[CH:13]=[CH:12][C:11]([O:14][C:15]2[C:20]3[CH2:21][C:22]([CH3:25])([CH3:24])[O:23][C:19]=3[CH:18]=[C:17]([C:26]([O:28][CH3:29])=[O:27])[CH:16]=2)=[CH:10][N:9]=1)=[O:7])(C)(C)C>C(Cl)Cl.C(O)(C(F)(F)F)=O>[CH3:29][O:28][C:26]([C:17]1[CH:16]=[C:15]([O:14][C:11]2[CH:12]=[CH:13][C:8]([C:6]([OH:7])=[O:5])=[N:9][CH:10]=2)[C:20]2[CH2:21][C:22]([CH3:25])([CH3:24])[O:23][C:19]=2[CH:18]=1)=[O:27]

Participants

4

Reactant 1

HCID 595603535-(6-Methoxycarbonyl-2,2-dimethyl-2,3-dihydro-benzofuran-4-yloxy)-pyridine-2-carboxylic acid tert-butyl ester

Product 1

HCID 595604345-(6-Methoxycarbonyl-2,2-dimethyl-2,3-dihydro-benzofuran-4-yloxy)-pyridine-2-carboxylic acid

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 6422Trifluoroacetic acidSolvent

Procedure

A solution of 5-(6-methoxycarbonyl-2,2-dim ethyl-2,3-dihydro-benzofuran-4-yloxy)-pyridine-2-carboxylic acid tert-butyl ester (163a) (260 mg, 0.65 mmol) in 4 mL CH2Cl2 and 2 mL TFA was stirred at room temperature for 2 hr. The mixture was concentrated, dried under vacuum, and taken to the next step as it is.

Workup

  1. concentrationThe mixture was concentrated
  2. customdried under vacuum

Sources & evidence

ORD record
ord-fae05f8aafd64091bc32487630678a26
Source dataset
uspto-grants-2010_11
Patent number
US07842713B2

Reaction notes

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