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Synthesis of 2-Azabicyclo[n.2.0]alkane-Derived Building Blocks

Synthesis 2018, 50 (10), 1973-1978

DOI: 10.1055/s-0037-1609434

Grygorenko O.; Kurkunov M.; Levandovskiy I.; Tymtsunik A.

An approach to 2-azabicyclo[n.2.0]alkane derivatives (n = 1, 2), which relies on a tandem Strecker reaction–intramolecular nucleophilic cyclization (STRINC) sequence of the corresponding 2-(ω-chloroalkyl)cyclobutanones (in turn prepared by [2+2] cycloaddition of keteniminium salts and ethylene) is described. The utility of the method is demonstrated by multigram syntheses of bicyclic proline analogues, monoprotected diamines, as well as parent 2-azabicyclo[4.2.0]octane.

Synthesis of 2-Azabicyclo[n.2.0]alkane-Derived Building Blocks


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