Treatment of N-propargyl-N′-tosylhydrazines with molecular iodine (I2) in the presence of NaHCO3 under warming conditions gave efficiently the corresponding 5-substituted 4-iodo-1-tosylpyrazoles in good to moderate yields. In addition, t...
The ion-supported PhI-catalyzed cyclization of N-methoxy-2-arylethanesulfonamides with mCPBA was carried out to form the corresponding N-methoxy-3,4-dihydro-2,1-benzothiazine-2,2-dioxides in moderate to good yields in 2,2,2-trifluoroethanol. Here,...
The 3-exo-tet cyclization of 2,2-disubstituted 1,3-dihalopropanes with In powder in THF solution of 20% H(2)O, dioxane solution of 20% H(2)O, and ionic liquids, such as [bmim]Br, [bmim]Cl, and [bmin]BF(4), respectively, was efficiently carried out...
2,4,5-Trisubstituted oxazoles could be easily prepared in moderate yields by the reaction of alkyl aryl ketones, iodoarene, m-chloroperbenzoic acid, and trifluoromethanesulfonic acid in acetonitrile, propionitrile, butyronitrile, and isobutyronitr...
Various benzylic halides were smoothly and directly converted into the corresponding aromatic nitrites in high yields using molecular iodine and 1,3-diiodo-5,5-dimethylhydantoin, respectively, in aq ammonia. Similarly, primary alkyl halides were a...
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