Tetrahedron

Synthesis and multinuclear NMR characterizations of some [3.3] diselena-and [4.4] tetraselenacyclophanes.

M Hojjatie, S Muralidharan, H Freiser

Index: Hojjatie, Massoud; Muralidharan, Subramaniam; Freiser, Henry Tetrahedron, 1989 , vol. 45, # 6 p. 1611 - 1622

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Citation Number: 43

Abstract

Several symmetrical and unsymmetrical bis-selenacyclophanes were prepared and characterized by multinuclear (1H, 13C {1H} and 77Se {1H}) NMR. The symmetrical cyclophanes of phenyl, furyl, pyridyl and thiophenyl appear to exist in predominantly syn conformation in solution at room temperature. VT-1H NMR of some cyclophanes indicate that the equilibrium between the syn conformers which differ in the disposition of the ...