Dichloromethane → 5-cyclopropyl-2-(4-fluorophenyl)-N-methyl-6-(N-(3-vinylphenyl)methylsulfonamido)benzofuran-3-carboxamide

HRID 2272372Notes

Reaction equation

HRID 2272372 reaction equation
Br[C:2]1[CH:3]=[C:4]([N:8]([C:13]2[C:32]([CH:33]3[CH2:35][CH2:34]3)=[CH:31][C:16]3[C:17]([C:27]([NH:29][CH3:30])=[O:28])=[C:18]([C:20]4[CH:25]=[CH:24][C:23]([F:26])=[CH:22][CH:21]=4)[O:19][C:15]=3[CH:14]=2)[S:9]([CH3:12])(=[O:11])=[O:10])[CH:5]=[CH:6][CH:7]=1.[CH3:36][C:37]1(C)C(C)(C)OB(C=C)O1.ClCCl.C(=O)([O-])[O-].[Na+].[Na+]>O1CCOCC1.CCOC(C)=O.Cl[Pd]Cl.C1(P(C2C=CC=CC=2)[C-]2C=CC=C2)C=CC=CC=1.[C-]1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=C1.[Fe+2].O>[CH:33]1([C:32]2[C:13]([N:8]([C:4]3[CH:5]=[CH:6][CH:7]=[C:2]([CH:36]=[CH2:37])[CH:3]=3)[S:9]([CH3:12])(=[O:11])=[O:10])=[CH:14][C:15]3[O:19][C:18]([C:20]4[CH:21]=[CH:22][C:23]([F:26])=[CH:24][CH:25]=4)=[C:17]([C:27]([NH:29][CH3:30])=[O:28])[C:16]=3[CH:31]=2)[CH2:34][CH2:35]1

Participants

9

Reactant 4

HCID 6344DichloromethaneHCID 10340Sodium CarbonateHCID 52330122-Ethenyl-4,4,5,5-tetramethyl-1,3,2-dioxaborolaneHCID 1317322626-(N-(3-bromophenyl)methylsulfonamido)-5-cyclopropyl-2-(4-fluorophenyl)-N-methylbenzofuran-3-carboxamide

Product 1

HCID 1317323245-cyclopropyl-2-(4-fluorophenyl)-N-methyl-6-(N-(3-vinylphenyl)methylsulfonamido)benzofuran-3-carboxamideYield 85.6%

Reagents, catalysts & solvents 4

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)CatalystHCID 962WaterSolventHCID 8857Ethyl AcetateSolventHCID 312751,4-DioxaneSolvent

Procedure

A mixture of 6-(N-(3-bromophenyl)methylsulfonamido)-5-cyclopropyl-2-(4-fluorophenyl)-N-methylbenzofuran-3-carboxamide (221 mg, 0.396 mmol), 4,4,5,5-tetramethyl-2-vinyl-1,3,2-dioxaborolane (0.134 mL, 0.793 mmol), [1,1′-bis(diphenylphosphino)ferrocene]-dichloropalladium(II), complex with dichloromethane (32.4 mg, 0.040 mmol) and sodium carbonate (126 mg, 1.189 mmol) in dioxane:water/4:1 (5 mL) was heated in a microwave reactor at 130° C. for 30 minutes. The reaction mixture was diluted with EtOAc and filtered through Celite. The solvent was evaporated and the residue was purified by silica gel chromatography (hexane:EtOAc) to give 5-cyclopropyl-2-(4-fluorophenyl)-N-methyl-6-(N-(3-vinylphenyl)methylsulfonamido)benzofuran-3-carboxamide (171 mg, 85% purity) as a sticky off-white foam. LCMS (m/z, ES+)=505 (M+H+). This material was taken to the next step without further purification.

Workup

  1. filtrationfiltered through Celite
  2. customThe solvent was evaporated
  3. customthe residue was purified by silica gel chromatography (hexane:EtOAc)

Sources & evidence

ORD record
ord-77a8b7870827412eabebb6859c6ebec1
Source dataset
uspto-grants-2015_09
Patent number
US09119868B2

Reaction notes

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