Hexahelicene. Absolute configuration

DA Lightner, DT Hefelfinger, TW Powers…

文献索引：Lightner,D.A. et al. Journal of the American Chemical Society, 1972 , vol. 94, # 10 p. 3492 - 3497

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被引用次数: 79

摘要

Abstract: The absolute stereochemistry of hexahelicene (1) has been determined from an X- ray study of optically active 2-bromohexahelicene (2). Levorotatory 2-bromohexahelicene (2a) with a left-handed chirality was converted to levorotatory hexahelicene (la). Thus (-)- hexahelicene (la) also has a left-handed helical configuration. exahelicene (1= la+ lb) was first synthesized5 H and resol~ ed~~~ by Newman and Lednicer. Moscowitz later ...