Synthesis 2018; 50(10): 1973-1978
DOI: 10.1055/s-0037-1609434
paper
© Georg Thieme Verlag Stuttgart · New York

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

a   Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine
b   Taras Shevchenko National University of Kyiv, Volodymyrska Street 60, Kyiv 01601, Ukraine   eMail: gregor@univ.kiev.ua
,
Maksym Kurkunov
a   Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine
,
Igor A. Levandovskiy
c   National Technical University of Ukraine ‘Igor Sikorsky Kyiv Polytechnic Institute’, Prospect Peremogy 37, Kyiv 03056, Ukraine
,
Andriy V. Tymtsunik
a   Enamine Ltd., Chervonotkatska Street 78, Kyiv 02094, Ukraine
c   National Technical University of Ukraine ‘Igor Sikorsky Kyiv Polytechnic Institute’, Prospect Peremogy 37, Kyiv 03056, Ukraine
› Institutsangaben

The work was supported by Enamine Ltd.
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Publikationsverlauf

Received: 05. Januar 2018

Accepted after revision: 26. Februar 2018

Publikationsdatum:
29. März 2018 (online)


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Abstract

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.

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