Tetrahedron Letters

The circular dichroism of 2, 3-dimethylidene-5-norbornyl derivatives

Z Zhichen, PA Carrupt, P Vogel

Index: Zhichen, Zou; Carrupt, Pierre-Alain; Vogel, Pierre Tetrahedron Letters, 1983 , vol. 24, # 34 p. 3607 - 3608

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Abstract

The gas phase and solution CD spectra of (1R)-5exo,5exo- and (1R)-5exo- (epoxy-methano)-2,3-dimethylidenebicyclo[2.2.1]heptanes have epposite Cotton effects for their V ← N transitions. An “extra” band is observed at ca. 215 nm for the endo epoxydiene only. ... J. Am. Chem. Soc., 103 (1981), p. 5314 and references cited therein. ... See: C. Mahain, L. Schwager, P.-A. Carrupt & P. Vogel, preceding paper. ... Characteristics of (1R)-9: [α] 23 ...