Br[C:2]1[CH:7]=[CH:6][C:5]([C:8]2[N:12]([C:13]3[CH:14]=[CH:15][C:16]([S:19]([NH2:22])(=[O:21])=[O:20])=[N:17][CH:18]=3)[N:11]=[C:10]([C:23]([F:26])([F:25])[F:24])[C:9]=2[Cl:27])=[CH:4][CH:3]=1.C([Sn](CCCC)(CCCC)[C:33]1[N:34]=[CH:35][S:36][CH:37]=1)CCC.[Cl-].[Li+]>O1CCOCC1>[Cl:27][C:9]1[C:10]([C:23]([F:26])([F:25])[F:24])=[N:11][N:12]([C:13]2[CH:14]=[CH:15][C:16]([S:19]([NH2:22])(=[O:21])=[O:20])=[N:17][CH:18]=2)[C:8]=1[C:5]1[CH:6]=[CH:7][C:2]([C:33]2[N:34]=[CH:35][S:36][CH:37]=2)=[CH:3][CH:4]=1A mixture of 5-[5-(4-bromophenyl)-4-chloro-3-(trifluoromethyl)-1H-pyrazol-1-yl]-2-pyridinesulfonamide (236 mg, 0.489 mmol), 4-(tributylstannyl)-1,3-thiazole 238 mg, 0.636 mmol), lithium chloride (27 mg, 0.636 mmol) and tetrakis(triphenyphosphine)palladium (57 mg, 0.0489 mmol) in 1,4-dioxane (10 ml) was refluxed for 5 hr under nitrogen atmosphere. After evaporation, the residue obtained was chromatographed on a column of silica gel (50 g) eluting with ethyl acetate/hexane (3:4) to afford 200 mg (84%) of the title compound as a pale brown gum.
Wird geladen…