1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → (E)-1-(4-acetylpiperazin-1-yl)-3-(4-chloro-3-nitrophenyl)prop-2-en-1-one

HRID 1872598Notes

Reaction equation

HRID 1872598 reaction equation
[Cl:1][C:2]1[CH:12]=[CH:11][C:5](/[CH:6]=[CH:7]/[C:8]([OH:10])=O)=[CH:4][C:3]=1[N+:13]([O-:15])=[O:14].[C:16]([N:19]1[CH2:24][CH2:23][NH:22][CH2:21][CH2:20]1)(=[O:18])[CH3:17].CCN=C=NCCCN(C)C>CN(C=O)C>[Cl:1][C:2]1[CH:12]=[CH:11][C:5](/[CH:6]=[CH:7]/[C:8]([N:22]2[CH2:23][CH2:24][N:19]([C:16](=[O:18])[CH3:17])[CH2:20][CH2:21]2)=[O:10])=[CH:4][C:3]=1[N+:13]([O-:15])=[O:14]

Participants

5

Reactant 3

HCID 159081-Ethyl-3-(3'-dimethylaminopropyl)carbodiimideHCID 837951-AcetylpiperazineHCID 6881084-Chloro-3-nitrocinnamic Acid

Product 1

HCID 10664709(E)-1-(4-acetylpiperazin-1-yl)-3-(4-chloro-3-nitrophenyl)prop-2-en-1-oneYield 91.6%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a stirred solution of trans-4-chloro-3-nitrocinnamic acid (1.50 g, 6.59 mmol) and 1-acetylpiperazine (0.89 g, 6.94 mmol) in 20 mL of DMF at room temperature was added EDAC (1.4 g, 7.30 mmol). The mixture was then stirred at room temperature for 2 hours. TLC indicated the complete consumption of the acid. Water was then added to quench the reaction and to precipitate out the product. Cinnamide was then collected through filtration and washed with cold water. The light yellow product was dried in vacuum oven overnight at 40° C. to give 2.04 g (6.03 mmol, 91.6%) of the title compound.

Workup

  1. customthe complete consumption of the acid
  2. additionWater was then added
  3. customto quench
  4. customthe reaction
  5. customto precipitate out the product
  6. filtrationCinnamide was then collected through filtration
  7. washwashed with cold water
  8. customThe light yellow product was dried in vacuum oven overnight at 40° C.

Sources & evidence

ORD record
ord-0050f00777ec4eb8807d887006e8da5b
Source dataset
uspto-grants-2000_08
Patent number
US06110922

Reaction notes

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