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Sulfuric Acid → 3-[4-(4-Methylpiperazin-1-Yl)phenyl]-9h-Pyrrolo[2,3-B:5,4-C']dipyridine-6-Carboxylic Acid

HRID 1888539
Notes
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Reaction equation

HRID 1888539 reaction equation
Br[C:2]1[CH:17]=[N:16][C:5]2[NH:6][C:7]3[CH:12]=[N:11][C:10]([C:13]([OH:15])=[O:14])=[CH:9][C:8]=3[C:4]=2[CH:3]=1.[CH3:18][N:19]1[CH2:24][CH2:23][N:22]([C:25]2[CH:30]=[CH:29][C:28](B(O)O)=[CH:27][CH:26]=2)[CH2:21][CH2:20]1.S(=O)(=O)(O)O>C(#N)C.C(=O)([O-])[O-].[Na+].[Na+].Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[CH3:18][N:19]1[CH2:24][CH2:23][N:22]([C:25]2[CH:26]=[CH:27][C:28]([C:2]3[CH:17]=[N:16][C:5]4[NH:6][C:7]5[CH:12]=[N:11][C:10]([C:13]([OH:15])=[O:14])=[CH:9][C:8]=5[C:4]=4[CH:3]=3)=[CH:29][CH:30]=2)[CH2:21][CH2:20]1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

7

Reactant 3

HCID 1118Sulfuric AcidHCID 53316427(4-(4-Methylpiperazin-1-yl)phenyl)boronic acidHCID 670275383-bromo-9H-dipyrido[2,3-b;4',3'-d]pyrrole-6-carboxylic acid

Product 1

HCID 582665593-[4-(4-Methylpiperazin-1-Yl)phenyl]-9h-Pyrrolo[2,3-B:5,4-C']dipyridine-6-Carboxylic Acid

Reagents, catalysts & solvents 3

HCID 178418476
HCID 178418476, compound
Catalyst
HCID 6342AcetonitrileSolvent
HCID 10340Sodium CarbonateSolvent

Conditions

Temperature
140 °C

Procedure

A degassed mixture of 3-bromo-9H-dipyrido[2,3-b;4′,3′-d]pyrrole-6-carboxylic acid (37.7 mg, 0.13 mmol), 4-(4-methylpiperazin-1-yl)phenylboronic acid, pinacol ester (58.5 mg, 0.194 mmol) and bis(triphenylphosphine)palladium(II) dichloride (4.5 mg, 6.4 μmol) in acetonitrile (2 mL) and aqueous sodium carbonate solution (2 mL) was heated under microwave irradiation at 140° C. for 10 minutes. The cooled reaction mixture was acidified with 10% aqueous sulfuric acid, filtered, and the crude solution was purified by preparative HPLC (0-30% MeCN over 30 min, 35 mL/min) to afford the title compound. 1H NMR (DMSO-D6, 400 MHz): 12.62 (s, 1H), 9.66 (s, 1H), 9.14-8.95 (m, 4H), 7.77 (d, J=8.7 Hz, 2H), 7.18 (d, J=8.9 Hz, 2H), 3.97 (d, J=13.4 Hz, 2H), 3.55 (d, J=11.6 Hz, 2H), 3.20 (q, J=11.1 Hz, 2H), 3.04 (t, J=11.9 Hz, 2H), 2.89 (s, 3H). LCMS (Method D): RT=5.09 min, M+H+=388.

Workup

  1. customThe cooled reaction mixture
  2. filtrationfiltered
  3. customthe crude solution was purified by preparative HPLC (0-30% MeCN over 30 min, 35 mL/min)

Sources & evidence

ORD record
ord-767a68c2858d44fb9c6cd237f326dca4
Source dataset
uspto-grants-2013_08
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08501765B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes