We targeted instead a cumulated psystem. A few reports show that EnT activation of an allene can form species with a vinyl-radical site. We reported that bis-aryl allenamides can afford dlactams via 1,5-HAT in the presence of Ir(ppy)3 and a molar excess of naphthalene. The reaction was limited to conjugated tri-substituted allenes, and terminal allenamides did not react, likely because of their reduced conjugation (Scheme 1d). We wanted to find suitable conditions for the activation of unbiased allenyl substrates, aiming to create strained 4-membered heterocycles rather than d-lactams, via sequential 1,5-HAT/radical recombination. This outline is challenging because the use of mono-substituted allenamides in EnT methods has few precedents, 12b-c and none involves a HAT step. Nonetheless, the concept would bring advantages: the sequence would provide azetidines (or b-lactams) decorated by a synthetically useful allylamine unit, for which, at present, no general method has been reported in the literature; additionally, in contrast to the conventional generation of vinyl radicals, the EnT process, which triggers the HAT that eventually provides the vinyl function to the product, is atom-economical.