1,1'-Carbonyldiimidazole → HCID 14390275, compound

HRID 2351677Notes

Reaction equation

HRID 2351677 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C:8]2[N:16]([CH2:17][C:18]([OH:20])=O)[C:11]3=[N:12][CH:13]=[CH:14][CH:15]=[C:10]3[N:9]=2)=[CH:4][CH:3]=1.C(N1C=CN=C1)(N1C=CN=C1)=O.[CH:33]1([NH2:36])[CH2:35][CH2:34]1>O1CCCC1>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([C:8]2[N:16]([CH2:17][C:18]([NH:36][CH:33]3[CH2:35][CH2:34]3)=[O:20])[C:11]3=[N:12][CH:13]=[CH:14][CH:15]=[C:10]3[N:9]=2)=[CH:6][CH:7]=1

Participants

5

Reactant 3

HCID 682631,1'-CarbonyldiimidazoleHCID 69828CyclopropylamineHCID 143904574-chlorophenyl-3H-imidazo[4,5-b]pyridine-3-acetic acid

Product 1

HCID 14390275HCID 14390275, compoundYield 53%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

Under nitrogen bubbling, a mixture of 2-(4chlorophenyl)-3H-imidazo [4,5-b]pyridine-3-acetic acid (4.0 g, 0.014 mole) and 1,1'-carbonyldiimidazole (2.27 g, 0.014 mole) in 150 ml of tetrahydrofuran was stirred at room temperature for 3 hours. Then, under nitrogen atmosphere, cyclopropylamine (2.40 g, 0.042 mole) was added and the reaction mixture was allowed to stir at room temperature overnight. The tetrahydrofuran was evaporated and the residue was recrystallized from isopropyl alcohol with refrigeration. The solid was collected by filtration, washed with cold isopropyl alcohol and water, and dried under high vacuum at 50° C. over the weekend to give 2.4 g (53%) of title compound, mp 231°-232° C.

Workup

  1. stirringto stir at room temperature overnight
  2. customThe tetrahydrofuran was evaporated
  3. customthe residue was recrystallized from isopropyl alcohol with refrigeration
  4. filtrationThe solid was collected by filtration
  5. washwashed with cold isopropyl alcohol and water
  6. customdried under high vacuum at 50° C. over the weekend

Sources & evidence

ORD record
ord-5f7929ca4f344907821312b05cd4aeeb
Source dataset
uspto-grants-1989_10
Patent number
US04873251

Reaction notes

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