Diisopropylethylamine → N-(2-(5-chloro-2-(triethylsilyl)-1H-pyrrolo[2,3-b]pyridin-3-yl)ethyl)-5-(2,5-difluorobenzyl)isoxazole-3-carboxamide

HRID 1918645Notes

Reaction equation

HRID 1918645 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]2[C:10]([CH2:11][CH2:12][NH2:13])=[C:9]([Si:14]([CH2:19][CH3:20])([CH2:17][CH3:18])[CH2:15][CH3:16])[NH:8][C:5]2=[N:6][CH:7]=1.[F:21][C:22]1[CH:36]=[CH:35][C:34]([F:37])=[CH:33][C:23]=1[CH2:24][C:25]1[O:29][N:28]=[C:27]([C:30](O)=[O:31])[CH:26]=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>[Cl:1][C:2]1[CH:3]=[C:4]2[C:10]([CH2:11][CH2:12][NH:13][C:30]([C:27]3[CH:26]=[C:25]([CH2:24][C:23]4[CH:33]=[C:34]([F:37])[CH:35]=[CH:36][C:22]=4[F:21])[O:29][N:28]=3)=[O:31])=[C:9]([Si:14]([CH2:15][CH3:16])([CH2:19][CH3:20])[CH2:17][CH3:18])[NH:8][C:5]2=[N:6][CH:7]=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 668320395-(2,5-Difluorobenzyl)isoxazole-3-carboxylic acidHCID 668320582-(5-chloro-2-(triethylsilyl)-1H-pyrrolo[2,3-b]pyridin-3-yl)ethanamine

Product 1

HCID 66832015N-(2-(5-chloro-2-(triethylsilyl)-1H-pyrrolo[2,3-b]pyridin-3-yl)ethyl)-5-(2,5-difluorobenzyl)isoxazole-3-carboxamideYield 49%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A mixture of 2-(5-chloro-2-(triethylsilyl)-1H-pyrrolo[2,3-b]pyridin-3-yl)ethanamine (0.128 g; 0.413 mmol), 5-(2,5-difluorobenzyl)isoxazole-3-carboxylic acid intermediate 74 (0.104 g; 0.434 mmol), HATU (N,N,N′,N′-Tetramethyl-O-(7-azabenzotriazol-1-yl)uronium hexafluorophosphate) (0.165 g: 0.434 mmol) and N,N-diisopropylethylamine (0.108 mL; 0.619 mmol) in DMF (3 mL) was stirred overnight at room temperature and concentrated under reduced pressure. The crude material was dissolved in dichloromethane and the organic layer was washed with water and concentrated under reduced pressure. The crude material was purified by flash chromatography on silica gel (eluent: 1 to 10% of ethyl acetate in dichloromethane) to give 0.108 g (49%) of N-(2-(5-chloro-2-(triethylsilyl)-1H-pyrrolo[2,3-b]pyridin-3-yl)ethyl)-5-(2,5-difluorobenzyl)isoxazole-3-carboxamide as a solid.

Workup

  1. concentrationconcentrated under reduced pressure
  2. dissolutionThe crude material was dissolved in dichloromethane
  3. washthe organic layer was washed with water
  4. concentrationconcentrated under reduced pressure
  5. customThe crude material was purified by flash chromatography on silica gel (eluent: 1 to 10% of ethyl acetate in dichloromethane)

Sources & evidence

ORD record
ord-81cd12288bad4c0e96752fa1f1914459
Source dataset
uspto-grants-2013_12
Patent number
US08618138B2

Reaction notes

Loading…