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DOI: 10.1039/A604734C (Paper) Reference Section for: J. Chem. Soc., Perkin Trans. 1, 1997, 775-782

Synthesis and stereochemistry of some new brominated spiro 1,3-dioxanes

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Ion Grosu, Brígida del Carmen Camacho, Alfredo Toscano, Gerard Plé, Sorin Mager, Roberto Martínez and Ruben Ramirez Gavino

Abstract

New dibrominated spiro 1,3-dioxanes have been obtained by a regio- and diastereo-selective reaction between six-membered ring spiro compounds and bromine. Studies on the stereochemistry of these brominated compounds, exhibiting a 1,5-dioxaspiro[5.5]undecane skeleton, were carried out by NMR methods in solution and by the solid-state molecular structure of four compounds established by single-crystal X-ray diffractometry. The diasteroselectivity of the bromination was explained by the asymmetric induction of chiral carbon atoms and the chiral spiro skeleton.

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