Catalytic iron-mediated ene carbocyclizations of trienes: the stereoselective preparation of N-acylpiperidines

Article abstract of DOI:10.1016/0040-4039(90)80168-L

5- and 6-Aza-(2Z,8E)-2,8,10-undecatriene and a 6-aza-(3Z,9E)-3,9,11-dodecatriene derivatives, substrates containing a nitrogen atom in the chain connecting the 1,3-diene and alkene functionalities, undergo efficient, stereoselective [4+4]-ene carbocycliza