Diisopropylethylamine → N-(2-(5-chloro-1H-indol-3-yl)ethyl)-5-(2-chlorobenzyl)-1,2,4-oxadiazole-3-carboxamide

HRID 58734Notes

Reaction equation

HRID 58734 reaction equation
[Cl:1][C:2]1[CH:18]=[CH:17][CH:16]=[CH:15][C:3]=1[CH2:4][C:5]1[O:9][N:8]=[C:7]([C:10]([O:12]CC)=O)[N:6]=1.Cl.[Cl:20][C:21]1[CH:22]=[C:23]2[C:27](=[CH:28][CH:29]=1)[NH:26][CH:25]=[C:24]2[CH2:30][CH2:31][NH2:32].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>C1COCC1.[OH-].[Na+].O.CN(C=O)C>[Cl:20][C:21]1[CH:22]=[C:23]2[C:27](=[CH:28][CH:29]=1)[NH:26][CH:25]=[C:24]2[CH2:30][CH2:31][NH:32][C:10]([C:7]1[N:6]=[C:5]([CH2:4][C:3]2[CH:15]=[CH:16][CH:17]=[CH:18][C:2]=2[Cl:1])[O:9][N:8]=1)=[O:12]

Participants

9

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 63379723Ethyl 5-(2-chlorobenzyl)-1,2,4-oxadiazole-3-carboxylate

Product 1

HCID 49869047N-(2-(5-chloro-1H-indol-3-yl)ethyl)-5-(2-chlorobenzyl)-1,2,4-oxadiazole-3-carboxamideYield 24%

Reagents, catalysts & solvents 4

HCID 962WaterSolventHCID 6228DimethylformamideSolventHCID 8028TetrahydrofuranSolventHCID 14798Sodium HydroxideSolvent

Procedure

This compound was prepared according to method F with ethyl 5-(2-chlorobenzyl)-1,2,4-oxadiazole-3-carboxylate (0.115 g; 0.433 mmol) in THF (1 mL) and sodium hydroxide in water (2M, 1 mL); and 2-(5-chloro-1H-indol-3-yl)ethanamine hydrochloride (0.100 g; 0.433 mmol), HATU (0.164 g; 0.432 mmol), N,N diisopropylethylamine (0.075 mL; 0.432 mmol), in DMF (4 mL). The crude mixture was purified by flash chromatography on silica (eluent 20 to 100% ethyl acetate in heptane) and preparative HPLC method 2 to yield 0.042 g (24%) of N-(2-(5-chloro-1H-indol-3-yl)ethyl)-5-(2-chlorobenzyl)-1,2,4-oxadiazole-3-carboxamide as a white solid.

Workup

  1. customThis compound was prepared
  2. customThe crude mixture was purified by flash chromatography on silica (eluent 20 to 100% ethyl acetate in heptane) and preparative HPLC method 2

Sources & evidence

ORD record
ord-4c2dc085b461445d966cfc51a07a8cca
Source dataset
uspto-grants-2016_09
Patent number
US09434722B2

Reaction notes

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