Several new β-amino esters were prepared in two simple steps from β-keto ester derivatives and primary and secondary amines under mild conditions. The hydrogenation of various enamino esters was performed at 50 ËC in the presence of iridium catalysts. The new β-N-substituted amino esters were isolated in high yields.
alkyl radical generation and cyclization to prepare substituted indolines in a green, metal-free procedure. This method complements the Fischer indolization, metal-catalyzed couplings, and photocatalyzed radical addition and cyclization. A wide range of functional groups is tolerated, including aryl halides, that would not be compatible with most existing methods. Electronic bias and substitution were