Benzoylhydrazine → HCID 71468456, compound

HRID 1401076Notes

Reaction equation

HRID 1401076 reaction equation
[C:1]([O:5][C:6]([N:8]1[C:16]2[C:11](=[CH:12][CH:13]=[CH:14][CH:15]=2)[C:10](/[CH:17]=[CH:18]/[C:19](O)=[O:20])=[CH:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[C:22]([NH:30][NH2:31])(=[O:29])[C:23]1[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=1.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.C(N(CC)C(C)C)(C)C>CN(C=O)C.CCOC(C)=O>[C:22]([NH:30][NH:31][C:19](=[O:20])/[CH:18]=[CH:17]/[C:10]1[C:11]2[C:16](=[CH:15][CH:14]=[CH:13][CH:12]=2)[N:8]([C:6]([O:5][C:1]([CH3:2])([CH3:3])[CH3:4])=[O:7])[CH:9]=1)(=[O:29])[C:23]1[CH:28]=[CH:27][CH:26]=[CH:25][CH:24]=1

Participants

7

Reactant 4

HCID 11955BenzoylhydrazineHCID 81531DiisopropylethylamineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 11323657HCID 11323657, compound

Product 1

HCID 71468456HCID 71468456, compound

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

To solution containing (E)-3-(1-(tert-butoxycarbonyl)-1H-indol-3-yl)acrylic acid (200 mg, 0.7 mmol), benzohydrazide (142.2 mg, 1.04 mmol) and HATU (397.02 mg, 1.04 mmol) dissolved in DMF (7.0 ml), N,N-diisopropylethylamine (DIPEA)(0.1819 ml, 1.04 mmol) was slowly drop-wise added and stirred at room temperature for 12 hr. The reaction mixture was diluted with EtOAc, washed with water and brine, dried with anhydrous MgSO4, filtered, and concentrated under reduced pressure. The residue was separated through silica gel chromatography (n-hexane:EtOAc=3:1) and dried so that ivory (E)-tert-butyl 3-(3-(2-benzoyl hydrazinyl)-3-oxoprop-1-enyl)-1H-indole-1-carboxylate was obtained (223.5 mg, 79.2%).

Workup

  1. washwashed with water and brine
  2. dry with materialdried with anhydrous MgSO4
  3. filtrationfiltered
  4. concentrationconcentrated under reduced pressure
  5. customThe residue was separated through silica gel chromatography (n-hexane:EtOAc=3:1)
  6. dry with materialdried so that ivory (E)-tert-butyl 3-(3-(2-benzoyl hydrazinyl)-3-oxoprop-1-enyl)-1H-indole-1-carboxylate
  7. customwas obtained (223.5 mg, 79.2%)

Sources & evidence

ORD record
ord-09629fd2c8024f10a2930e717282f1a2
Source dataset
uspto-grants-2014_12
Patent number
US08906952B2

Reaction notes

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