We serendipitously found an unprecedented 5-to-7-membered ring expansion of 2-alkylspiroindolenines to azepinoindoles mediated by n-tetrabutylammonium fluoride. The starting materials can be easily ...

A new α-amino acid esters formation reaction has been developed via decarboxylation. The methodology is distinguished by its practical novelty in terms of the readily accessible starting materials, ...