2-Fluoro-4-nitrophenol → 7-(2-Fluoro-4-nitrophenoxy)-2-iodothieno[3,2-b]pyridine

HRID 1475544Notes

Reaction equation

HRID 1475544 reaction equation
Cl[C:2]1[CH:7]=[CH:6][N:5]=[C:4]2[CH:8]=[C:9]([I:11])[S:10][C:3]=12.[N+:12]([C:15]1[CH:20]=[CH:19][C:18]([OH:21])=[C:17]([F:22])[CH:16]=1)([O-:14])=[O:13].C([O-])([O-])=O.[K+].[K+]>O(C1C=CC=CC=1)C1C=CC=CC=1.C(Cl)Cl>[F:22][C:17]1[CH:16]=[C:15]([N+:12]([O-:14])=[O:13])[CH:20]=[CH:19][C:18]=1[O:21][C:2]1[CH:7]=[CH:6][N:5]=[C:4]2[CH:8]=[C:9]([I:11])[S:10][C:3]=12

Participants

6

Reactant 3

HCID 98252-Fluoro-4-nitrophenolHCID 11430Potassium CarbonateHCID 177504007-Chloro-2-iodothieno(3,2-b)pyridine

Product 1

HCID 594576617-(2-Fluoro-4-nitrophenoxy)-2-iodothieno[3,2-b]pyridineYield 74%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 7583Diphenyl EtherSolvent

Procedure

A mixture of the 7-chloro-2-iodothieno[3,2-b]pyridine (23) (Ragan J. A. et al, Organic Process Research and Development 2003, 7, 676-683) (7.0 g, 23.7 mmol), 2-fluoro-4-nitrophenol (3) (11.15 g, 71.1 mmol), K2CO3 (13.08 g, 94.8 mmol) in Ph2O (30 ml) was heated at 200° C. for 3 h. The reaction mixture was cooled to room temperature, diluted with DCM and filtered; the filtrate was collected and then concentrated. The resultant solid was triturated with diethyl ether, to afford intermediate 24 (7.3 g, 74% yield), which was used directly in the next step with no additional purification. MS (m/z): 417.0 (M+H).

Workup

  1. filtrationfiltered
  2. customthe filtrate was collected
  3. concentrationconcentrated
  4. customThe resultant solid was triturated with diethyl ether

Sources & evidence

ORD record
ord-0e9344200d6f4bc68ebeaaf610a99771
Source dataset
uspto-grants-2015_04
Patent number
US09018378B2

Reaction notes

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