Visible-light-induced metal-free cascade cyclization of <i>N</i>-arylpropiolamides to 3-phosphorylated, trifluoromethylated and thiocyanated azaspiro[4.5]trienones

Abstract

Photocatalytic strategies for the preparation of 3-functionalized azaspiro[4.5]trienones <italic>via</italic> a radical-initiated cascade annulation reaction was developed.