Synthesis and molecular structure of [7] circulene

…, Y Okamoto, H Chikamatsu, M Nakazaki…

Index: Yamamoto; Harada; Okamoto; Chikamatsu; Nakazaki; Kai; Nakao; Tanaka; Kasai Journal of the American Chemical Society, 1988 , vol. 110, # 11 p. 3578 - 3584

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Citation Number: 66

Abstract

Abstract: The polycyclic aromatic compound with a circular arrangement of seven benzene rings,[7] circulene (3), was prepared by treatment of 1116-dehydr+ 2, 15- diformylhexahelicene (30) with low-valent titanium, and its unusual saddle-shaped structure with C, symmetry was supported by its X-ray analysis. Preparation, X-ray analysis, and optical stability of dehydro [7] circulene derivatives 17, 29, and 30 were also reported.