1-Hydroxybenzotriazole → 5-Chloroisoquinolin-4-carboxylic amide

HRID 1470506Notes

Reaction equation

HRID 1470506 reaction equation
[Cl:1][C:2]1[CH:11]=[CH:10][CH:9]=[C:8]2[C:3]=1[C:4]([C:12]([OH:14])=O)=[CH:5][N:6]=[CH:7]2.CC[N:17](C(C)C)C(C)C.CCN=C=NCCCN(C)C.Cl.C1C=CC2N(O)N=NC=2C=1>C1COCC1.CCOC(C)=O.O>[Cl:1][C:2]1[CH:11]=[CH:10][CH:9]=[C:8]2[C:3]=1[C:4]([C:12]([NH2:17])=[O:14])=[CH:5][N:6]=[CH:7]2

Participants

8

Reactant 4

HCID 757711-HydroxybenzotriazoleHCID 81531DiisopropylethylamineHCID 27239391,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 682819645-Chloroisoquinoline-4-carboxylic acid

Product 1

HCID 682818935-Chloroisoquinolin-4-carboxylic amideYield 70%

Reagents, catalysts & solvents 3

HCID 962WaterSolventHCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Procedure

A 100 mL RBF was charged with 5-chloroisoquinolin-4-carboxylic acid (1 equiv) in dry THF (20 mL), DIPEA (3 equiv), EDC.HCl (1.5 equiv), HOBT (1.5 equiv) under inert atmosphere and the mixture was stirred for 15 mins. To this, corresponding amine (1.2 equiv) was added dropwise and the reaction mixture was stirred overnight. After completion, it was diluted with EtOAc and water. The organic layer was then separated, dried and concentrated under reduced pressure to give the crude product that was purified by column chromatography using 100-200 silica gel (80% Ethyl acetate in Hexanes) to furnish the desired amide derivative in 70-84% yield.

Workup

  1. stirringthe reaction mixture was stirred overnight
  2. customThe organic layer was then separated
  3. customdried
  4. concentrationconcentrated under reduced pressure
  5. customto give the crude product that
  6. customwas purified by column chromatography

Sources & evidence

ORD record
ord-0f4b566d253a4322a9b310816c4f3244
Source dataset
uspto-grants-2015_04
Patent number
US09006442B2

Reaction notes

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