Triethylamine → 3-(2,3,4,6-Tetra-O-acetyl-beta-D-glucopyranosyloxy)-4-({4-[(1E)-3-carboxyprop-1-enyl]phenyl}methyl)-5-isopropyl-1H-pyrazole

HRID 1442369Notes

Reaction equation

HRID 1442369 reaction equation
[C:1]([O:4][C@@H:5]1[C@@H:10]([O:11][C:12](=[O:14])[CH3:13])[C@H:9]([O:15][C:16](=[O:18])[CH3:17])[C@@H:8]([CH2:19][O:20][C:21](=[O:23])[CH3:22])[O:7][C@H:6]1[O:24][C:25]1[C:29]([CH2:30][C:31]2[CH:36]=[CH:35][C:34](Br)=[CH:33][CH:32]=2)=[C:28]([CH:38]([CH3:40])[CH3:39])[NH:27][N:26]=1)(=[O:3])[CH3:2].[C:41]([OH:46])(=[O:45])[CH2:42][CH:43]=[CH2:44].C(N(CC)CC)C.CC1C=CC=CC=1P(C1C=CC=CC=1C)C1C=CC=CC=1C>C(#N)C.C([O-])(=O)C.[Pd+2].C([O-])(=O)C>[C:1]([O:4][C@@H:5]1[C@@H:10]([O:11][C:12](=[O:14])[CH3:13])[C@H:9]([O:15][C:16](=[O:18])[CH3:17])[C@@H:8]([CH2:19][O:20][C:21](=[O:23])[CH3:22])[O:7][C@H:6]1[O:24][C:25]1[C:29]([CH2:30][C:31]2[CH:36]=[CH:35][C:34](/[CH:44]=[CH:43]/[CH2:42][C:41]([OH:46])=[O:45])=[CH:33][CH:32]=2)=[C:28]([CH:38]([CH3:40])[CH3:39])[NH:27][N:26]=1)(=[O:3])[CH3:2]

Participants

7

Reactant 4

HCID 8471TriethylamineHCID 327433-Butenoic acidHCID 80271Tri-o-tolylphosphineHCID 685357693-(2,3,4,6-tetra-O-acetyl-beta-D-glucopyranosyloxy)-4-[(4-bromophenyl)methyl]-5-isopropyl-1H-pyrazole

Product 1

HCID 685375513-(2,3,4,6-Tetra-O-acetyl-beta-D-glucopyranosyloxy)-4-({4-[(1E)-3-carboxyprop-1-enyl]phenyl}methyl)-5-isopropyl-1H-pyrazoleYield 57.5%

Reagents, catalysts & solvents 2

HCID 167845palladium(II) acetateCatalystHCID 6342AcetonitrileSolvent

Procedure

To a solution of 3-(2,3,4,6-tetra-O-acetyl-β-D-gluco-pyranosyloxy)-4-[(4-bromophenyl)methyl]-5-isopropyl-1H-pyrazole (3.0 g) and 3-butenoic acid (1.0 g) in acetonitrile (15 mL) were added triethylamine (2.4 g), palladium acetate (II) (0.11 g) and tris(2-methylphenyl)phosphine (0.29 g), and the mixture was refluxed overnight under shading the light. The solvent was removed under reduced pressure, and the residue was purified by column chromatography on silica gel (eluent: ethyl acetate-dichloromethane/methanol=10/1) to give the title compound (1.74 g).

Workup

  1. temperaturethe mixture was refluxed overnight
  2. customThe solvent was removed under reduced pressure
  3. customthe residue was purified by column chromatography on silica gel (eluent: ethyl acetate-dichloromethane/methanol=10/1)

Sources & evidence

ORD record
ord-c0063e49d85d4408934b7ee003f41abc
Source dataset
uspto-grants-2010_02
Patent number
US07655632B2

Reaction notes

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