Journal of the American Chemical Society

Steric Effects and Spectra in the Tetracyclones

EL Shapiro, EI Becker

文献索引：Shapiro; Becker Journal of the American Chemical Society, 1953 , vol. 75, p. 4769,4771

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被引用次数: 12

摘要

Four ortho-substituted tetraphenylcyclopentadienones have been prepared: 2-(2'- chlorophenyl)-3, 4, 5-triphenylcyclo-pentadienone (VIII), 3-(2 '-chlorophenyl)-2, 4, 5- triphenylcyclopentadienone (IX), 2, 5-bis-(2'-chlorophenyl) 3, 4-diphenyl-cyclopentadienone (X) and 3, 4-bis-(2'-chlorophenyl)-2, 5-diphenylcyclopentadienone (XI). Examination of the ultraviolet absorption spectra of these molecules shows two major absorption peaks. ...