1-Hydroxybenzotriazole → HCID 89660117, compound

HRID 2274564Notes

Reaction equation

HRID 2274564 reaction equation
[CH2:1]([O:3][C:4]([C:6]1[CH:10]=[C:9]([CH3:11])[N:8]([C:12]2[CH:20]=[CH:19][C:18]([N+:21]([O-:23])=[O:22])=[CH:17][C:13]=2[C:14]([OH:16])=O)[N:7]=1)=[O:5])[CH3:2].[CH2:24]1[C:33]2[C:28](=[CH:29][CH:30]=[CH:31][CH:32]=2)[CH2:27][C@@H:26]([CH2:34][OH:35])[NH:25]1.CCN=C=NCCCN(C)C.Cl.C1C=CC2N(O)N=NC=2C=1>CN(C=O)C.O>[OH:35][CH2:34][C@@H:26]1[CH2:27][C:28]2[C:33](=[CH:32][CH:31]=[CH:30][CH:29]=2)[CH2:24][N:25]1[C:14]([C:13]1[CH:17]=[C:18]([N+:21]([O-:23])=[O:22])[CH:19]=[CH:20][C:12]=1[N:8]1[C:9]([CH3:11])=[CH:10][C:6]([C:4]([O:3][CH2:1][CH3:2])=[O:5])=[N:7]1)=[O:16]

Participants

7

Reactant 4

HCID 757711-HydroxybenzotriazoleHCID 776757[(3S)-1,2,3,4-tetrahydroisoquinolin-3-yl]methanolHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 89649536HCID 89649536, compound

Product 1

HCID 89660117HCID 89660117, compoundYield 61.8%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

To an ice cooled solution of 2-(3-(ethoxycarbonyl)-5-methyl-1H-pyrazol-1-yl)-5-nitrobenzoic acid (25.0 g, 78.4 mmol) in DMF (250 mL) were added (S)-(1,2,3,4-tetrahydroisoquinolin-3-yl)methanol (31.0 g, 62.7 mmol), EDC.HCl (23.0 g, 117.5 mmol), HOBT (13.75 g, 101.9 mmol) followed by stirring at RT for 12 h. The reaction mixture was diluted with water, extracted with EtOAc (500 mL×2) twice. The combined organic layers were washed with water (500 mL), brine (100 mL), dried over sodium sulphate and concentrated invacuo. The residue was purified on silica gel (100-200 mesh) to afford the ‘off white’ title compound 18 g (49%). Rf=0.45 (25% EtOAc in hexane); 1H NMR (400 MHz, DMSO-d6): δ 8.70-8.35 (m, 2H), 8.15-7.98 (m, 1H), 7.25-6.95 (m, 4H), 6.82-6.58 (m, 1H), 5.20-3.80 (m, 8H), 3.40-2.40 (m, 2H), 2.38-2.10 (m, 3H), 1.30-0.80 (m, 3H); ES-MS: m/z 465.3 (M+H).

Workup

  1. extractionextracted with EtOAc (500 mL×2) twice
  2. washThe combined organic layers were washed with water (500 mL), brine (100 mL)
  3. dry with materialdried over sodium sulphate
  4. concentrationconcentrated invacuo
  5. customThe residue was purified on silica gel (100-200 mesh)

Sources & evidence

ORD record
ord-d164b35e74e544cd803a02e402cf69c7
Source dataset
uspto-grants-2015_09
Patent number
US09126980B2

Reaction notes

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