Diisopropylethylamine → (S)-N1-(2-(5-chloro-1H-indol-3-yl)ethyl)-N2-(1-hydroxy-3-phenylpropan-2-yl)oxalamide

HRID 1918555Notes

Reaction equation

HRID 1918555 reaction equation
Cl.[Cl:2][C:3]1[CH:4]=[C:5]2[C:9](=[CH:10][CH:11]=1)[NH:8][CH:7]=[C:6]2[CH2:12][CH2:13][NH2:14].[OH:15][CH2:16][C@@H:17]([NH:25][C:26](=[O:30])[C:27](O)=[O:28])[CH2:18][C:19]1[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=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:2][C:3]1[CH:4]=[C:5]2[C:9](=[CH:10][CH:11]=1)[NH:8][CH:7]=[C:6]2[CH2:12][CH2:13][NH:14][C:27](=[O:28])[C:26]([NH:25][C@@H:17]([CH2:18][C:19]1[CH:20]=[CH:21][CH:22]=[CH:23][CH:24]=1)[CH2:16][OH:15])=[O:30]

Participants

6

Reactant 4

HCID 81531DiisopropylethylamineHCID 28274945-Chloro-1H-indole-3-ethylamine monohydrochlorideHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 66831891(S)-2-(1-hydroxy-3-phenylpropan-2-ylamino)-2-oxoacetic acid

Product 1

HCID 86663833(S)-N1-(2-(5-chloro-1H-indol-3-yl)ethyl)-N2-(1-hydroxy-3-phenylpropan-2-yl)oxalamideYield 58%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

The mixture of 2-(5-chloro-1H-indol-3-yl)ethanamine hydrochloride (0.256 g; 1.09 mmol), (S)-2-(1-hydroxy-3-phenylpropan-2-ylamino)-2-oxoacetic acid (0.267 g; 1.19 mmol), HATU (0.413 g: 1.09 mmol) and N,N-diisopropylethylamine (0.474 mL; 2.71 mmol) in DMF (5 mL) was stirred at room temperature overnight and concentrated under reduced pressure. The residue was dissolved in dichloromethane, the organic layer was washed with water, and was concentrated under reduced pressure. The crude material was purified by flash chromatography on silica gel (eluent 1 to 10% methanol in dichloromethane) to yield 0.251 g (58%) of (S)—N1-(2-(5-chloro-1H-indol-3-yl)ethyl)-N2-(1-hydroxy-3-phenylpropan-2-yl)oxalamide as a white solid.

Workup

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

Sources & evidence

ORD record
ord-84f26813568d4d0da752b8885c181e06
Source dataset
uspto-grants-2013_12
Patent number
US08618138B2

Reaction notes

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