Trifluoroacetic acid → 4-(Adamantan-1-ylmethoxy)-5-cyclopropyl-2-fluorobenzoic acid

HRID 1427834Notes

Reaction equation

HRID 1427834 reaction equation
[C:1]12([CH2:11][O:12][C:13]3[C:25]([CH:26]4[CH2:28][CH2:27]4)=[CH:24][C:16]([C:17]([O:19]C(C)(C)C)=[O:18])=[C:15]([F:29])[CH:14]=3)[CH2:10][CH:5]3[CH2:6][CH:7]([CH2:9][CH:3]([CH2:4]3)[CH2:2]1)[CH2:8]2.FC(F)(F)C(O)=O>ClCCl>[C:1]12([CH2:11][O:12][C:13]3[C:25]([CH:26]4[CH2:27][CH2:28]4)=[CH:24][C:16]([C:17]([OH:19])=[O:18])=[C:15]([F:29])[CH:14]=3)[CH2:2][CH:3]3[CH2:4][CH:5]([CH2:6][CH:7]([CH2:9]3)[CH2:8]1)[CH2:10]2

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 86702860Tert-butyl 4-(adamantan-1-ylmethoxy)-5-cyclopropyl-2-fluorobenzoate

Product 1

HCID 867028614-(Adamantan-1-ylmethoxy)-5-cyclopropyl-2-fluorobenzoic acidYield 85.1%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of tert-butyl 4-(adamantan-1-ylmethoxy)-5-cyclopropyl-2-fluorobenzoate (13.80 g, 34.45 mmol) in dichloromethane (50 mL), was added trifluoroacetic acid (25 ml). The reaction mixture was stirred at ambient temperature for 2 hours and then concentrated in vacuo. The residue was titrated in methanol (50 mL), the solid was collected by filtration and dried to give the title compound as a colorless solid (10.10 g, 85%): 1H NMR (300 MHz, DMSO-d6) δ 12.77 (br s, 1H), 7.29 (d, J=8.4 Hz, 1H), 6.83 (d, J=13.2 Hz, 1H), 3.59 (s, 2H), 2.04-1.92 (m, 4H), 1.71-1.58 (m, 12H), 0.91-0.83 (m, 2H), 0.59-0.52 (m, 2H).

Workup

  1. concentrationconcentrated in vacuo
  2. filtrationthe solid was collected by filtration
  3. customdried

Sources & evidence

ORD record
ord-d2bd1236345c499290e3af27f8d138a6
Source dataset
uspto-grants-2015_01
Patent number
US08933236B2

Reaction notes

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