1-Hydroxybenzotriazole → 2,3-Dihydro-1-benzoxepine-4-carboxamide

HRID 566047Notes

Reaction equation

HRID 566047 reaction equation
C1OC2C=CC([C:10]3[CH:11]=[CH:12][C:13]4[O:19][CH2:18][CH2:17][C:16]([C:20](O)=[O:21])=[CH:15][C:14]=4[CH:23]=3)=CC=2O1.C[N:25](CC1C=CC(N)=CC=1)C1CCOCC1.ON1C2C=CC=CC=2N=N1.Cl.C(N=C=NCCCN(C)C)C>CN(C)C=O.CN(C)C1C=CN=CC=1.O.C(N(CC)CC)C>[O:19]1[C:13]2[CH:12]=[CH:11][CH:10]=[CH:23][C:14]=2[CH:15]=[C:16]([C:20]([NH2:25])=[O:21])[CH2:17][CH2:18]1

Participants

9

Reactant 4

HCID 757711-HydroxybenzotriazoleHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 9877845(4-Amino-benzyl)-methyl-(tetrahydro-pyran-4-yl)-amineHCID 184722047-(3,4-Methlenedioxyphenyl)-2,3-dihydro-1-benzoxepine-4-carboxylic acid

Product 1

HCID 184723002,3-Dihydro-1-benzoxepine-4-carboxamideYield 222.6%

Reagents, catalysts & solvents 4

HCID 142844-(Dimethylamino)pyridineCatalystHCID 962WaterSolventHCID 6228DimethylformamideSolventHCID 8471TriethylamineSolvent

Procedure

To a solution of 7-(3,4-methlenedioxyphenyl)-2,3-dihydro-1-benzoxepine-4-carboxylic acid (0.14 g), 4-(N-methyl-N-(tetrahydropyran-4-yl)aminomethyl)aniline (0.11 g) and 1-hydroxy-benzotriazole (0.15 g) in dimethylformamide (10 ml) was added 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (0.13 g) under ice-cooling. Under nitrogen atmosphere, the reaction mixture was warmed to room temperature. To the mixture were added 4-dimethylaminopyridine (3 mg) and triethylamine (0.19 ml), and the mixture was stirred for 18 hours, poured into water, and extracted with ethyl acetate. The organic layer was washed with water and saturated sodium chloride solution, and dried with anhydrous magnesium sulfate. Under reduced pressure, the solvent was evaporated, and the residue was purified with silica gel column (ethyl acetate) to give 7-(3,4-methlenedioxyphenyl)-4-(N-methyl-N-(tetrahydropyran-4-yl)aminomethyl)phenyl)-2,3-dihydro-1-benzoxepine-4-carboxamide (0.19 g).

Workup

  1. temperaturecooling
  2. extractionextracted with ethyl acetate
  3. washThe organic layer was washed with water and saturated sodium chloride solution
  4. dry with materialdried with anhydrous magnesium sulfate
  5. customUnder reduced pressure, the solvent was evaporated
  6. customthe residue was purified with silica gel column (ethyl acetate)

Sources & evidence

ORD record
ord-9a295ea5e39d4c08980268592e4b0a50
Source dataset
uspto-grants-2001_01
Patent number
US06172061B2

Reaction notes

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