Sodium Carbonate → tert-Butyl 2-(4-(7-(2-fluoro-4-nitrophenoxy)thieno[3,2-b]pyridin-2-yl)-1H-pyrazol-1-yl)ethyl(2-methoxyethyl)carbamate

HRID 1952452Notes

Reaction equation

HRID 1952452 reaction equation
[CH3:1][O:2][CH2:3][CH2:4][N:5]([CH2:13][CH2:14][N:15]1[CH:19]=[C:18](B2OC(C)(C)C(C)(C)O2)[CH:17]=[N:16]1)[C:6](=[O:12])[O:7][C:8]([CH3:11])([CH3:10])[CH3:9].[F:29][C:30]1[CH:46]=[C:45]([N+:47]([O-:49])=[O:48])[CH:44]=[CH:43][C:31]=1[O:32][C:33]1[CH:38]=[CH:37][N:36]=[C:35]2[CH:39]=[C:40](I)[S:41][C:34]=12.C([O-])([O-])=O.[Na+].[Na+]>COCCOC.C(Cl)Cl.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:29][C:30]1[CH:46]=[C:45]([N+:47]([O-:49])=[O:48])[CH:44]=[CH:43][C:31]=1[O:32][C:33]1[CH:38]=[CH:37][N:36]=[C:35]2[CH:39]=[C:40]([C:18]3[CH:17]=[N:16][N:15]([CH2:14][CH2:13][N:5]([CH2:4][CH2:3][O:2][CH3:1])[C:6](=[O:12])[O:7][C:8]([CH3:9])([CH3:10])[CH3:11])[CH:19]=3)[S:41][C:34]=12

Participants

7

Reactant 3

HCID 10340Sodium CarbonateHCID 57919493tert-Butyl 2-methoxyethyl(2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)ethyl)carbamateHCID 594576617-(2-Fluoro-4-nitrophenoxy)-2-iodothieno[3,2-b]pyridine

Product 1

HCID 57919561tert-Butyl 2-(4-(7-(2-fluoro-4-nitrophenoxy)thieno[3,2-b]pyridin-2-yl)-1H-pyrazol-1-yl)ethyl(2-methoxyethyl)carbamate

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 6344DichloromethaneSolventHCID 80711,2-DimethoxyethaneSolvent

Procedure

A mixture of 78 (369.3 mg, 0.93 mmol), 7-(2-fluoro-4-nitrophenoxy)-2-iodothieno[3,2-b]pyridine (24) [US 2006/0287343 A1] (466.6 mg, 1.12 mmol), Pd(PPh3)4 (54 mg, 0.05 mmol) and Na2CO3 (305 mg, 2.8 mmol) in DME (1.9 mL) was heated to reflux overnight under nitrogen. It was then diluted with DCM, washed with water, dried over anhydrous sodium sulphate and concentrated under reduced pressure. The residue was purified by flash chromatography, eluents EOAc/Hex 1:1, EtOAc, 5% MeOH in DCM affording title compound 79 (203 mg, 39%) as brown syrup. MS (m/z): 558.2 (100%) (M+H).

Workup

  1. temperaturewas heated
  2. temperatureto reflux overnight under nitrogen
  3. washwashed with water
  4. dry with materialdried over anhydrous sodium sulphate
  5. concentrationconcentrated under reduced pressure
  6. customThe residue was purified by flash chromatography, eluents EOAc/Hex 1:1, EtOAc, 5% MeOH in DCM affording title compound 79 (203 mg, 39%) as brown syrup

Sources & evidence

ORD record
ord-281838873bff48e982f1835ec9951a56
Source dataset
uspto-grants-2013_03
Patent number
US08404846B2

Reaction notes

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