Lactones, XXII: Synthesis and reduction of α-aminomethylene-δ,δ-diphenyl-δ-valerolactones

Article abstract of DOI:10.1002/ardp.19903230212

Treatment with tris-(dimethylamino)-methane resp. formylation and reaction with piperidine transfer 1 to 5a,b, which cannot be reduced to the corresponding α-aminomethyllactones 4a,b, in contrast to the homologue 6 and other α-aminomethylene-γ- and δ-lact