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Designed by fragment-reassembly strategy, the reaction between glycine esters and cyclic enol ethers was achieved in the catalysis of TBPA +· /O 2 , yielding a series of quinoline-fused lactones and 2,3-disubstituted quinolines. This approach provided an efficient method to construct quinoline skeleton, in which two new rings and two new C–C bonds were built in one pot. [ABSTRACT FROM AUTHOR]

A facile and efficient radical cation salt-induced approach to dihydroquinazoline derivatives has been developed by sp 3 C H oxidation, and the method uses readily available glycine esters as the starting material under aerobic oxidation conditions without addition of any additive. The present method provides a convenient and practical route for construction of quinazoline skeleton. [ABSTRACT FROM AUTHOR]

The oxidation of sp 3 C H bonds in N- alkylhydrazides was achieved en route to the efficient synthesis of a broad series of 1,3,4-oxadiazoles. Mechanistic studies have revealed that N- acylhydrazone is a key intermediate in this catalytic transformation. [ABSTRACT FROM AUTHOR]