Stereochemistry of 1, 3-cyclohexadienes. Conformational preferences in 9-substituted 9, 10-dihydrophenanthrenes

RG Harvey, PP Fu, PW Rabideau

文献索引：Harvey,R.G. et al. Journal of Organic Chemistry, 1976 , vol. 41, # 23 p. 3722 - 3725

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被引用次数: 21

摘要

A series of 9-R-9, lO-dihydrophenanthrenes [R= CH3, CN, C (CH3) 3, COCH3, C02CH3, C02CH2CH3, OH, Si (CH&] as well as two related 5, 6-dihydrochrysenes, are studied by NMR analysis of the three spin Hg, Hlo, Hl, y system. The coupling constants thus obtained are then used to determine the conformational preferences of these mobile ring systems with regard to the location of substituents in pseudoaxial or pseudoequatorial positions. All ...