Stannane → 4-(2,2-dimethylpropyl)-2-{1-[4-(5-fluoropyridin-2-yl)benzyl]vinyl}-N,N-dimethyl-1H-imidazole-1-sulfonamide

HRID 1881515Notes

Reaction equation

Br[C:2]1[CH:7]=[CH:6][C:5]([F:8])=[CH:4][N:3]=1.Br[C:10]1[CH:34]=[CH:33][C:13]([CH2:14][C:15]([C:17]2[N:18]([S:27]([N:30]([CH3:32])[CH3:31])(=[O:29])=[O:28])[CH:19]=[C:20]([CH2:22][C:23]([CH3:26])([CH3:25])[CH3:24])[N:21]=2)=[CH2:16])=[CH:12][CH:11]=1.[SnH4]>COCCOC.C(OCC)(=O)C.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>[CH3:24][C:23]([CH3:26])([CH3:25])[CH2:22][C:20]1[N:21]=[C:17]([C:15]([CH2:14][C:13]2[CH:12]=[CH:11][C:10]([C:2]3[CH:7]=[CH:6][C:5]([F:8])=[CH:4][N:3]=3)=[CH:34][CH:33]=2)=[CH2:16])[N:18]([S:27]([N:30]([CH3:32])[CH3:31])(=[O:29])=[O:28])[CH:19]=1

Participants

Conditions

Temperature: 90 °C

Procedure

Pd(PPh3)4 (196 mg) was added to a solution of 2-bromo-5-fluoropyridine in DME (10 mL) at ambient temperature. After heating at 90° C. overnight the reaction mixture was cooled. 2-[1-(4-bromobenzyl)vinyl]-4-(2,2-dimethylpropyl)-N,N-dimethyl-1H-imidazole-1-sulfonamide (110 mg) was added to the stannane solution followed by Pd(PPh3)4 (100 mg). After stirring at 95° C. overnight, the reaction mixture was cooled, diluted with ethyl acetate and washed with water. The organic phase was dried (sodium sulfate) and concentrated. Chromatography of the resulting crude product over silica eluting with 0-50% ethyl acetate/hexanes afforded 4-(2,2-dimethylpropyl)-2-{1-[4-(5-fluoropyridin-2-yl)benzyl]vinyl}-N,N-dimethyl-1H-imidazole-1-sulfonamide.

Workup

temperaturewas cooled
temperaturethe reaction mixture was cooled
washwashed with water
dry with materialThe organic phase was dried (sodium sulfate)
concentrationconcentrated

Sources & evidence

ORD record: ord-f35116e9b3ec4cbdac5b8a4c86a7728a
Source dataset: uspto-grants-2012_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08318767B2

Reaction notes

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