Novel liquid crystalline compounds containing bicyclo [3.1. 0] hexane core units

…, D Demus, K Miyazawa, A de Meijere

文献索引：Kozhushkov, Sergei I.; Langer, Rainer; Yufit, Dmitrii S.; Howard, Judith A. K.; Schill, Heiko; Demus, Dietrich; Miyazawa, Kazutoshi; De Meijere, Armin European Journal of Organic Chemistry, 2004 , # 2 p. 289 - 303

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被引用次数: 2

摘要

Abstract Additions of ethyl or tert-butyl diazoacetates to 4-substituted cyclopentenes 6 and 17 under dirhodium tetraacetate/tetraoctanoate catalysis led to mixtures of tert-butyl endo, exo-and exo, exo-3-carboxyl (aryl) bicyclo [3.1. 0] hexane-6-carboxylates 7 and 18 in yields of 54− 90% from which exo, exo-diastereomers were isolated in yields of 39− 63%. Diester exo, exo-7 was saponified and converted into diaryl diesters exo, exo-9a, b in overall ...