Dimere aus o-Nitrobenzylidenacetessigestern
Die o-Nitrobenzylidenacetessigester 1 dimerisieren in Gegenwart von BuLi oder LDA mit geringer Ausbeute zu den Cyclohexenen 2. Von 2b werden zwei Diastereomere isoliert, deren Konfiguration nmr-spektroskopisch abgeleitet wird.
Dimers from o-nitrobenzylidene acetoacetic esters
The o-nitrobenzylidene acetoacetic esters 1 dimerize in the presence of BuLi or LDA to give the cyclohexenes 2 in poor yield. Two diastereomer of 2b were isolated, whose configuration is deduced by nmr-spectroscopic methods.
Dimers from o-nitrobenzylidene acetoacetic esters
The o-nitrobenzylidene acetoacetic esters 1 dimerize in the presence of BuLi or LDA to give the cyclohexenes 2 in poor yield. Two diastereomer of 2b were isolated, whose configuration is deduced by nmr-spectroscopic methods.
Document Type: Research Article
Affiliations: 1: Institut für Pharmazeutische Chemie der Technischen Universität Braunschweig, Beethovenstraße 55, Braunschweig, D-38106, Germany, Email: [email protected] 2: Institut für Pharmazeutische Chemie der Technischen Universität Braunschweig, Braunschweig, Germany
Publication date: 01 August 2005
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