Copper-catalyzed base switching procedures for the synthesis of various fused isoquinolinone derivatives and iminoisoindolinone derivatives from the same starting materials have been developed. In these reaction sequences it is found that benzyl cyanide acts as a nucleophile in the presence of strong bases while it acts as a cyanide donor in the presence of weak bases. A wide substrate scope, good functional group tolerance, and handy reaction conditions are the important features of these proto-cols. Futhermore, using these protocols a wide variety of imidazolone-fused isoquinolinone derivatives, pyrimidinone-fused isoquinolinone derivatives, a di-

An efficient and straight forward procedure for the syntheses of bicyclic isoxazole/isoxazoline derivatives from the corresponding dimethyl-2-(2-nitro-1-aryl/alkyl)-2-(prop-2-yn-1yl)malonates or dimethyl 2-allyl-2-(2-nitro-1-aryl/alkyl ethyl)malonate is described. High yields and simple operations are important features of this methodology.

Herein, we disclose a practical and simple procedure to synthesize 2-aminobenzoxaoles. Simple anilines and formamides were used as substrates. The C−H bond ortho to the amino group in the anilines was directly functionalized under cobalt-catalyzed conditions with high levels of functional group tolerance. Hypervalent iodine(III) was both an oxidant and a Lewis acid for this reaction. The mechanism study showed that this transformation may involve a radical process.