Sodium Dithionite → HCID 178419434, compound

HRID 416835Notes

Reaction equation

HRID 416835 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]([CH2:52][C:53]3[CH:54]=[N:55][CH:56]=[CH:57][CH:58]=3)[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+].[N:67]1([C:73]2[CH:80]=[CH:79][C:76]([CH:77]=O)=[CH:75][CH:74]=2)[CH2:72][CH2:71][O:70][CH2:69][CH2:68]1>C(O)C.CN(C=O)C>[Br:35][C:36]1[C:37]([N:46]2[CH2:51][CH2:50][N:49]([CH2:52][C:53]3[CH:54]=[N:55][CH:56]=[CH:57][CH:58]=3)[CH2:48][CH2:47]2)=[C:38]2[N:43]=[C:77]([C:76]3[CH:75]=[CH:74][C:73]([N:67]4[CH2:72][CH2:71][O:70][CH2:69][CH2:68]4)=[CH:80][CH:79]=3)[NH:42][C:39]2=[N:40][CH:41]=1

Participants

7

Reactant 4

HCID 24489Sodium DithioniteHCID 2913494-MorpholinobenzaldehydeHCID 468687795-Bromo-3-nitro-4-(4-(pyridin-3-ylmethyl)piperazin-1-yl)pyridin-2-amineHCID 178482685HCID 178482685, compound

Product 1

HCID 178419434HCID 178419434, compoundYield 37%

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-(pyridin-3-ylmethyl)piperazin-1-yl)pyridin-2-amine (20 mg, 0.051 mmol), DMF (0.15 mL), ethanol (0.85 mL), 1M Na2S2O4 (3 eq, 0.15 mmol, 0.15 mL) and 4-morpholin-4-yl-benzaldehyde (1.1 eq, 0.056 mmol, 11 mg). After 6 h, concentration in vacuo and purification by preparative tlc (CH2Cl2-MeOH, 95:5) gave the product (10 mg, 37%) as an off-white solid; δH (500 MHz, DMSO-d6) 2.61 (s, br, 4H, piperazine N(CH2)2), 3.24 (t, J=4.9 Hz, 4H, morpholine N(CH2)2), 3.62 (s, 2H, CH2), 3.64 (t, J=4.7 Hz, 4H, piperazine N(CH2)2), 3.76 (t, J=4.7 Hz, 4H, morpholine O(CH2)2), 7.06 (d, J=9.0 Hz, 2H, phenyl H-3 & H-5), 7.39 (dd, J=7.7, 4.8 Hz, 1H, pyridine H-5), 7.79 (dt, J=7.7, 1.7 Hz, 1H, pyridine H-4), 8.04 (d, J=9.0 Hz, 2H, phenyl H-2 & H-6), 8.17 (s, 1H, imidazo[4,5-b]pyridine H-5), 8.49 (dd, J=4.8, 1.6 Hz, 1H, pyridine H-6), 8.56 (d, J=1.5 Hz, 1H, pyridine H-2), 13.22 (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, 95:5)

Sources & evidence

ORD record
ord-86e115e4821a4283a70a0af3d115fc92
Source dataset
uspto-grants-2012_01
Patent number
US08088761B2

Reaction notes

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