tert-Butyl {2-[3-(2,3-dihydro-1-ethyloxycarbonyl-3-oxo-indazol-2-yl)-propylsulfanyl]-benzoimidazol-1-yl}-acetate → {2-[3-(2,3-Dihydro-1-ethyloxycarbonyl-3-oxo-indazol-2-yl)-propylsulfanyl]-benzoimidazol-1-yl}-acetic acid

HRID 2389476Notes

Reaction equation

HRID 2389476 reaction equation
[CH2:1]([O:3][C:4]([N:6]1[C:14]2[C:9](=[CH:10][CH:11]=[CH:12][CH:13]=2)[C:8](=[O:15])[N:7]1[CH2:16][CH2:17][CH2:18][S:19][C:20]1[N:24]([CH2:25][C:26]([O:28]C(C)(C)C)=[O:27])[C:23]2[CH:33]=[CH:34][CH:35]=[CH:36][C:22]=2[N:21]=1)=[O:5])[CH3:2]>C(O)(C(F)(F)F)=O.ClCCl>[CH2:1]([O:3][C:4]([N:6]1[C:14]2[C:9](=[CH:10][CH:11]=[CH:12][CH:13]=2)[C:8](=[O:15])[N:7]1[CH2:16][CH2:17][CH2:18][S:19][C:20]1[N:24]([CH2:25][C:26]([OH:28])=[O:27])[C:23]2[CH:33]=[CH:34][CH:35]=[CH:36][C:22]=2[N:21]=1)=[O:5])[CH3:2]

Participants

3

Reactant 1

HCID 86620027tert-Butyl {2-[3-(2,3-dihydro-1-ethyloxycarbonyl-3-oxo-indazol-2-yl)-propylsulfanyl]-benzoimidazol-1-yl}-acetate

Product 1

HCID 11518131{2-[3-(2,3-Dihydro-1-ethyloxycarbonyl-3-oxo-indazol-2-yl)-propylsulfanyl]-benzoimidazol-1-yl}-acetic acidYield 13.2%

Reagents, catalysts & solvents 1

HCID 21863450Trifluoroacetic acid methylene chlorideSolvent

Procedure

tert-Butyl {2-[3-(2,3-dihydro-1-ethyloxycarbonyl-3-oxo-indazol-2-yl)-propylsulfanyl]-benzoimidazol-1-yl}-acetate (Precursor G-01b, 63.8 mg, 0.1 mmol) is stirred in TFA/dichloromethane (1:1, 2 ml) at rt overnight. The solvents are removed in vacuo. The crude is taken up in chloroform (1 ml) and filtered over cotton wool. The solvent is removed in vacuuo and the residue is dried under high vacuum. This yields the title compound (6 mg) in 11% as a colourless oil: tR=2.24 min (LC-2), ESI-MS (pos.): m/z 455.11 [M+H]+, ESI-MS (neg.): m/z 453.22 [M−H]+; 1H-NMR (DMSO-d6): δ (ppm) 1.31 (t, 3H, CH3), 2.03 (quint., 2H, CH2CH2N), 3.18 (m, 2H, SCH2), 4.23 (t, 2H, CH2N), 4.36 (q, 2H, OCH2), 4.94 (s, 2H, CH2CO2), 7.10-7.15 (m, 2H, m), 7.39 (t, 1 Harom), 7.46 (m, 2Harom), 7.70-7.78 (m, 2Harom), 7.87 (d, 1Harom)

Workup

  1. customThe solvents are removed in vacuo
  2. filtrationfiltered over cotton wool
  3. customThe solvent is removed in vacuuo
  4. customthe residue is dried under high vacuum

Sources & evidence

ORD record
ord-2d662801880c46219aa0f0506e5eb83b
Source dataset
uspto-grants-2012_09
Patent number
US08273740B2

Reaction notes

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