Triethylamine → 4-[2-Oxo-5-(3,4,5-trimethoxy-phenyl)-1,2-dihydro-pyrrolo[2,3-b]pyridin-3-ylidenemethyl]-benzonitrile

HRID 333169Notes

Reaction equation

HRID 333169 reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[C:5]([C:13]2[CH:14]=[C:15]3[CH2:21][C:20](=[O:22])[NH:19][C:16]3=[N:17][CH:18]=2)[CH:6]=[C:7]([O:11][CH3:12])[C:8]=1[O:9][CH3:10].[C:23]([C:25]1[CH:32]=[CH:31][C:28]([CH:29]=O)=[CH:27][CH:26]=1)#[N:24].C(N(CC)CC)C>C1(C)C=CC=CC=1>[O:22]=[C:20]1[NH:19][C:16]2=[N:17][CH:18]=[C:13]([C:5]3[CH:6]=[C:7]([O:11][CH3:12])[C:8]([O:9][CH3:10])=[C:3]([O:2][CH3:1])[CH:4]=3)[CH:14]=[C:15]2[C:21]1=[CH:29][C:28]1[CH:31]=[CH:32][C:25]([C:23]#[N:24])=[CH:26][CH:27]=1

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 660424-CyanobenzaldehydeHCID 667786575-(3,4,5-Trimethoxy-phenyl)-1,3-dihydro-pyrrolo[2,3-b]pyridin-2-one

Product 1

HCID 667796084-[2-Oxo-5-(3,4,5-trimethoxy-phenyl)-1,2-dihydro-pyrrolo[2,3-b]pyridin-3-ylidenemethyl]-benzonitrileYield 54%

Reagents, catalysts & solvents 1

HCID 1140TolueneSolvent

Procedure

A mixture of 5-(3,4,5-trimethoxy-phenyl)-1,3-dihydro-pyrrolo[2,3-b]pyridin-2-one (Intermediate BY, 42 mg, 0.14 mmol), 4-cyanobenzaldehyde (22 mg, 0.168 mmol), triethylamine (22 μl, 0.168 mmol) and molecular sieves 4 Å (100 mg) in toluene (2 ml) was reacted at 80° C. for 1 d. The mixture was partitioned between DCM and water, the aqueous phase extracted with DCM, combined organic phases dried, evaporated and purified by silica gel chromatography (0-5% MeOH:DCM) to obtain 31 mg (54%) of the title compound as a mixture of (E)- and (Z)-isomers.

Workup

  1. customwas reacted at 80° C. for 1 d
  2. customThe mixture was partitioned between DCM and water
  3. extractionthe aqueous phase extracted with DCM
  4. customdried
  5. customevaporated
  6. custompurified by silica gel chromatography (0-5% MeOH:DCM)

Sources & evidence

ORD record
ord-ee7878c66fe94470b4911690807d227e
Source dataset
uspto-grants-2014_11
Patent number
US08877772B2

Reaction notes

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