Diisopropylethylamine → N-(2-(5-bromo-1H-indol-3-yl)ethyl)-5-(2,5-difluorobenzyl)isoxazole-3-carboxamide

HRID 1918752

Reaction equation

HRID 1918752 reaction equation
[F:1][C:2]1[CH:16]=[CH:15][C:14]([F:17])=[CH:13][C:3]=1[CH2:4][C:5]1[O:9][N:8]=[C:7]([C:10]([OH:12])=O)[CH:6]=1.Cl.[Br:19][C:20]1[CH:21]=[C:22]2[C:26](=[CH:27][CH:28]=1)[NH:25][CH:24]=[C:23]2[CH2:29][CH2:30][NH2:31].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>[Br:19][C:20]1[CH:21]=[C:22]2[C:26](=[CH:27][CH:28]=1)[NH:25][CH:24]=[C:23]2[CH2:29][CH2:30][NH:31][C:10]([C:7]1[CH:6]=[C:5]([CH2:4][C:3]2[CH:13]=[C:14]([F:17])[CH:15]=[CH:16][C:2]=2[F:1])[O:9][N:8]=1)=[O:12]

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 132411752-(5-Bromo-1H-indol-3-yl)ethan-1-amine--hydrogen chloride (1/1)HCID 668320395-(2,5-Difluorobenzyl)isoxazole-3-carboxylic acid

Product 1

HCID 66831747N-(2-(5-bromo-1H-indol-3-yl)ethyl)-5-(2,5-difluorobenzyl)isoxazole-3-carboxamideYield 60%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A solution of 5-(2,5-difluorobenzyl)isoxazole-3-carboxylic acid (0.104 g, 0.435 mmol), 2-(5-bromo-1H-indol-3-yl)ethanamine hydrochloride (0.120 g; 0.435 mmol), HATU (0.166 g; 0.435 mmol) and N,N diisopropylethylamine (0.201 mL; 1.09 mmol) in DMF (5 mL), was stirred at room temperature overnight. The reaction mixture was partitioned between ethyl acetate and sodium hydrogen sulphate, the organic layer was washed with sodium carbonate, brine, dried and concentrated under reduced pressure. The crude mixture was purified by flash chromatography on silica (eluent 20 to 100% ethyl acetate in heptane) to yield 0.120 g (60%) of N-(2-(5-bromo-1H-indol-3-yl)ethyl)-5-(2,5-difluorobenzyl)isoxazole-3-carboxamide as a white solid.

Workup

  1. customThe reaction mixture was partitioned between ethyl acetate and sodium hydrogen sulphate
  2. washthe organic layer was washed with sodium carbonate, brine
  3. customdried
  4. concentrationconcentrated under reduced pressure
  5. customThe crude mixture was purified by flash chromatography on silica (eluent 20 to 100% ethyl acetate in heptane)

Sources & evidence

ORD record
ord-cd05e375f74a496690a70b89dc981c88
Source dataset
uspto-grants-2013_12
Patent number
US08618138B2

Linked notes

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