Photochemical Synthesis of 1,2-Diazepine-Fused β-Lactams via Staudinger-Type [2 + 2] Cyclization
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Herein, we report a one-pot sequence to prepare 1,2-diazepine fused β-lactams under photochemical irradiation. Hence, α-diazoketones are readily converted to the corresponding ketenes in an additive-free Wolff rearrangement and react with isolated or in situ... ...
