Sodium Dithionite → HCID 178436765, compound

HRID 416866

Reaction equation

HRID 416866 reaction equation
BrC1C(N2CCN(C(NC3C=CC=CC=3)=O)CC2)=C2N=C(C3C=CC(N(C)C)=CC=3)NC2=NC=1.[Br:35][C:36]1[C:37]([N:46]2[CH2:51][CH2:50][N:49]([CH:52]([C:54]3[CH:59]=[CH:58][N:57]=[CH:56][CH:55]=3)[CH3:53])[CH2:48][CH2:47]2)=[C:38]([N+:43]([O-])=O)[C:39]([NH2:42])=[N:40][CH:41]=1.[O-]S(S([O-])=O)=O.[Na+].[Na+].[CH3:68][N:69]([CH3:81])[CH2:70][CH2:71][O:72][C:73]1[CH:80]=[CH:79][C:76]([CH:77]=O)=[CH:75][CH:74]=1>C(O)C.CN(C=O)C>[Br:35][C:36]1[C:37]([N:46]2[CH2:51][CH2:50][N:49]([CH:52]([C:54]3[CH:59]=[CH:58][N:57]=[CH:56][CH:55]=3)[CH3:53])[CH2:48][CH2:47]2)=[C:38]2[N:43]=[C:77]([C:76]3[CH:79]=[CH:80][C:73]([O:72][CH2:71][CH2:70][N:69]([CH3:68])[CH3:81])=[CH:74][CH:75]=3)[NH:42][C:39]2=[N:40][CH:41]=1

Participants

7

Reactant 4

HCID 24489Sodium DithioniteHCID 84823p-(2-(Dimethylamino)ethoxy)benzaldehydeHCID 468683495-Bromo-3-nitro-4-(4-(1-(pyridin-4-yl)ethyl)piperazin-1-yl)pyridin-2-amineHCID 178482685HCID 178482685, compound

Product 1

HCID 178436765HCID 178436765, compoundYield 22.1%

Reagents, catalysts & solvents 2

HCID 702EthanolSolventHCID 6228DimethylformamideSolvent

Procedure

This was prepared using the same procedure as for 4-(6-bromo-2-(4-(dimethylamino)phenyl)-3H-imidazo[4,5-b]pyridin-7-yl)-N-phenylpiperazine-1-carboxamide, but here using 5-bromo-3-nitro-4-(4-(1-(pyridin-4-yl)ethyl)piperazin-1-yl)pyridin-2-amine (30 mg, 0.074 mmol), DMF (0.15 mL), ethanol (0.85 mL), 1M Na2S2O4 (3 eq, 0.22 mmol, 0.22 mL) and 4-(2-(dimethylamino)ethoxy)benzaldehyde (1.1 eq, 0.088 mmol, 17 mg). After 6 h, concentration in vacuo and purification by preparative tlc (CH2Cl2-MeOH, 85:15) gave the product (9 mg, 21%) as a colourless solid; δH (500 MHz, DMSO-d6) 1.35 (d, J=6.7 Hz, 3H, CHCH3), 2.25 (s, 6H, N(CH3)2), 2.51-2.55 (m, 2H, piperazine NCH2), 2.63-2.65 (m, 2H, piperazine NCH2), 2.67 (t, J=5.6 Hz, 2H, Me2NCH2), 3.57 (q, J=6.7 Hz, 1H, CHCH3), 3.63-3.66 (m, 4H, piperazine N(CH2)2), 4.14 (q, J=5.8 Hz, 2H, OCH2), 7.10 (d, J=8.9 Hz, 2H, phenyl H-3 & H-5), 7.39 (d, J=6.0 Hz, 2H, pyridine H-3 & H-5), 8.11 (d, J=8.8 Hz, 2H, phenyl H-2 & H-6), 8.19 (s, 1H, imidazo[4,5-b]pyridine H-5), 8.54 (d, J=5.9 Hz, 2H, pyridine H-2 & H-6), 13.33 (s, br, 1H, imidazo[4,5-b]pyridine NH);

Workup

  1. customThis was prepared
  2. concentrationconcentration
  3. customin vacuo and purification by preparative tlc (CH2Cl2-MeOH, 85:15)

Sources & evidence

ORD record
ord-8a78bf40faf9445a84ec0dee64645c18
Source dataset
uspto-grants-2012_01
Patent number
US08088761B2

Linked notes

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