2-Pyridinemethanamine → HCID 69157702, compound

HRID 852215Notes

Reaction equation

HRID 852215 reaction equation
[CH3:1][C:2]([CH3:18])([N:7]1[C:15](=[O:16])[C:14]2[C:9](=[CH:10][CH:11]=[CH:12][CH:13]=2)[C:8]1=[O:17])[CH2:3][C:4]([OH:6])=O.[NH2:19][CH2:20][C:21]1[CH:26]=[CH:25][CH:24]=[CH:23][N:22]=1>C(Cl)Cl>[N:22]1[CH:23]=[CH:24][CH:25]=[CH:26][C:21]=1[CH2:20][NH:19][C:4](=[O:6])[CH2:3][C:2]([CH3:1])([CH3:18])[N:7]1[C:15](=[O:16])[C:14]2[C:9](=[CH:10][CH:11]=[CH:12][CH:13]=2)[C:8]1=[O:17]

Participants

4

Reactant 2

HCID 195092-PyridinemethanamineHCID 22038564beta,beta-Dimethyl-1,3dioxo-2-isoindolinepropionic acid

Product 1

HCID 69157702HCID 69157702, compoundYield 58.3%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of β,β-dimethyl-1,3-dioxo-2-isoindolinepropionic acid (5 g, 20.2 mmol) and N,N-dicyclohexylcarbodiimide (4.6 g, 22.24 mmol) in 50 ml of dry methylene chloride is added 2-(aminomethyl)pyridine (2.41 g, 2.3 ml, 22.24 mmol) at ambient temperature. The mixture is stirred for 24 hours. The precipitate of dicyclohexyl urea is filtered off and discarded. The filtrate is evaporated and the residue is purified via flash chromatography on silica gel using a methylene chloride/methylene chloride-ethanolic ammonia gradient (100 to 96:4) to give 3.97 g of N-[(2-pyridinyl)methyl]-1,3-dihydro-β,βdimethyl-1,3-dioxo-2H-isoindole-2-propanamide (58%).

Workup

  1. filtrationThe precipitate of dicyclohexyl urea is filtered off
  2. customThe filtrate is evaporated
  3. customthe residue is purified via flash chromatography on silica gel using a methylene chloride/methylene chloride-ethanolic ammonia gradient (100 to 96:4)

Sources & evidence

ORD record
ord-c479958db41540efafc8b4ba69220389
Source dataset
uspto-grants-2007_08
Patent number
US07253181B2

Reaction notes

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