A concise and efficient synthesis of highlyenantioenriched 3-alkyl and 3-aryl-2,3-dihydro-1H-isoindolinones is reported. The key step relies on the diastereoselective reduction of the N-acylhydrazonium salts generated by acidic treatment of hemiaminal precursors bearing the (S)-2-methoxymethylpyrrolidin-1-yl (SMP) auxiliary.
The development of an unprecedented methodology based upon direct photolysis of N,N-disubstituted hydrazides to secure N-N bondcleavage and to trigger the formation of NH-free lactams has been disclosed.
已经公开了基于 N,N-二取代酰肼的直接光解以确保 NN 键断裂并触发无 NH 内酰胺的形成的前所未有的方法的开发。