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

HRID 58759Notes

Reaction equation

HRID 58759 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.[F:18][C:19]([F:33])([F:32])[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>[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]([NH:31][CH2:30][CH2:29][C:23]2[C:22]3[C:26](=[CH:27][CH:28]=[C:20]([C:19]([F:33])([F:18])[F:32])[CH:21]=3)[NH:25][CH:24]=2)=[O:12])[CH:6]=1

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 120301362-(5-(trifluoromethyl)-1H-indol-3-yl)ethanamineHCID 668320395-(2,5-Difluorobenzyl)isoxazole-3-carboxylic acid

Product 1

HCID 668318995-(2,5-difluorobenzyl)-N-(2-(5-(trifluoromethyl)-1H-indol-3-yl)ethyl)isoxazole-3-carboxamideYield 9%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A mixture of 5-(2,5-difluorobenzyl)isoxazole-3-carboxylic acid (0.08 g, 0.334 mmol), 2-(5-(trifluoromethyl)-1H-indol-3-yl)ethanamine (0.080 g; 0.334 mmol), HATU (0.127 g; 0.334 mmol) and N,N diisopropylethylamine (0.144 mL; 0.836 mmol) in DMF (3 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 2 to 60% ethyl acetate in heptane) and by preparative HPLC method 2 to yield 0.013 g (9%) of 5-(2,5-difluorobenzyl)-N-(2-(5-(trifluoromethyl)-1H-indol-3-yl)ethyl)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 2 to 60% ethyl acetate in heptane) and by preparative HPLC method 2

Sources & evidence

ORD record
ord-d6370bc5d8674a139967acfbae9835e9
Source dataset
uspto-grants-2016_09
Patent number
US09434722B2

Reaction notes

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