Water → HCID 19858048, compound

Reaction equation

[CH3:1][C:2]1([CH3:32])[C:6](=[O:7])[O:5][C:4]2[CH:8]=[CH:9][C:10]3[C:15]([C:3]1=2)=[CH:14][C:13]([CH:16](OS(C1C=CC(C)=CC=1)(=O)=O)[C:17]([F:20])([F:19])[F:18])=[CH:12][CH:11]=3.[NH:33]1[CH:37]=[N:36][CH:35]=[N:34]1.O>S1(=O)(=O)CCCC1>[CH3:1][C:2]1([CH3:32])[C:6](=[O:7])[O:5][C:4]2[CH:8]=[CH:9][C:10]3[C:15]([C:3]1=2)=[CH:14][C:13]([CH:16]([N:33]1[CH:37]=[N:36][CH:35]=[N:34]1)[C:17]([F:20])([F:19])[F:18])=[CH:12][CH:11]=3

Participants

Procedure

A solution of 1,1-dimethyl-8-(2,2,2-trifluoro-1-tosyloxyethyl)-2(1H)-naphtho[2,1-b]furanone and 1,2,4-triazole (0.5 g) in tetrahydrothiophen-1,1-dioxide (1 ml) was heated at 140° for 18 h. The mixture was treated with water (20 ml) and extracted twice with diethyl ether, and the combined ether extracts were dried and evaporated to dryness under reduced pressure. The residue was purified by flash chromatography, using ethyl acetate: pentane, 1:1 v/v, as eluant, to give 1,1-dimethyl-8-[1-(1H-1,2,4-triazol-1-yl)-2,2,2-trifluoroethyl]-2(1H)-naphtho[2,1-b]furanone. Nmr in deuteriochloroform: δ 8.35(1H,s); 8.15(1H,d); 8.09(1H,s); 7.98(1H,d); 7.87(1H,d); 7.51(1H,dd); 7.46(1H,d); 6.14(1H,q); 1.78(3H,s); 1.75(3H,s).