Methanol → 6-(7-(2-Fluoro-4-nitrophenoxy)thieno[3,2-b]pyridin-2-yl)nicotinaldehyde

HRID 1711111Notes

Reaction equation

HRID 1711111 reaction equation
[F:1][C:2]1[CH:18]=[C:17]([N+:19]([O-:21])=[O:20])[CH:16]=[CH:15][C:3]=1[O:4][C:5]1[CH:10]=[CH:9][N:8]=[C:7]2[CH:11]=[C:12](I)[S:13][C:6]=12.Br[C:23]1[CH:30]=[CH:29][C:26]([CH:27]=[O:28])=[CH:25][N:24]=1.[Sn].CO>O1CCOCC1.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[F:1][C:2]1[CH:18]=[C:17]([N+:19]([O-:21])=[O:20])[CH:16]=[CH:15][C:3]=1[O:4][C:5]1[CH:10]=[CH:9][N:8]=[C:7]2[CH:11]=[C:12]([C:23]3[CH:30]=[CH:29][C:26]([CH:27]=[O:28])=[CH:25][N:24]=3)[S:13][C:6]=12

Participants

7

Reactant 4

HCID 887MethanolHCID 5352426Tin atomHCID 117692346-Bromo-3-pyridinecarboxaldehydeHCID 594576617-(2-Fluoro-4-nitrophenoxy)-2-iodothieno[3,2-b]pyridine

Product 1

HCID 594576666-(7-(2-Fluoro-4-nitrophenoxy)thieno[3,2-b]pyridin-2-yl)nicotinaldehydeYield 52.1%

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 312751,4-DioxaneSolvent

Procedure

A solution of 408 (1 g, 2.40 mmol) and 6-bromonicotinaldehyde (450 mg, 2.40 mmol) in dioxane (10 mL) was treated sequentially with bistirmethyl tin (500 μL, 787 mg, 2.40 mmol) and Pd(PPh3)4 (270 mg, 0.24 mmol). The reaction mixture was heated to reflux under nitrogen overnight and concentrated. The residue was purified by flash chromatography using the gradient 5%-10% MeOH in DCM as an eluent and subsequent trituration with MeOH, yielding pure 438 (494 mg, 52% yield). 1H NMR (400 MHz, DMSO-d6) δ (ppm): 10.11 (s, 1H), 9.10 (m, 1H), 8.65 (d, 1H, J=5.2 Hz), 8.62 (s, 1H), 8.51 (d, 1H, J=8.8 Hz), 8.48 (dd, 1H, J=2.8 Hz, J=10.4 Hz), 8.38 (dd, 1H, J=2.1 Hz, J=8.2 Hz), 8.20 (m, 1H), 7.73 (t, 1H, J=9.0 Hz), 7.01 (d, 1H, J=5.5 Hz). LCMS: (M+H) 395.9.

Workup

  1. temperatureThe reaction mixture was heated
  2. temperatureto reflux under nitrogen overnight
  3. concentrationconcentrated
  4. customThe residue was purified by flash chromatography

Sources & evidence

ORD record
ord-62b6fcee04f440b9b2dec51890c88a26
Source dataset
uspto-grants-2010_09
Patent number
US07790729B2

Reaction notes

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