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    The use of flow technology as an enabling tool for accessing 1-azabicyclo[1.1.0]butanes bearing strained 3-, 4-, and 5-membered O-heterocycles with C3(N-het)-C2(O-het) connectivity is reported. Reactivity and chemoselectivity (N-ring vs. O-ring) were also evaluated. New chemical space has been explored and new structural motifs such as ABB-aziridines or spiro azetidine-oxazetidines are also reported.


    Pantaleo Musci, Marco Colella, Michael Andresini, Andrea Aramini, Leonardo Degennaro, Renzo Luisi. Flow technology enabled preparation of C3-heterosubstituted 1-azabicyclo[1.1.0]butanes and azetidines: accessing unexplored chemical space in strained heterocyclic chemistry. Chemical communications (Cambridge, England). 2022 May 26;58(43):6356-6359

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    PMID: 35536561

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