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A general synthesis of substituted fluorenones and azafluorenones

…, ST Liu, K Chockalingam, BR Reddy

文献索引:Kyba, Evan P.; Liu, Shiuh-Tzung; Chockalingam, Kannappan; Reddy, B. Raghava Journal of Organic Chemistry, 1988 , vol. 53, # 15 p. 3513 - 3521

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被引用次数: 48

摘要

Twenty-one variously substituted fluorenones and azafluorenones have been synthesized via photochemical Pschorr cyclizations of 2-diazoniodiaryl ketones as the key ring-forming step. Direct,(bipy) 3Ru11-, or (bipy), Run/Cun-photosensitized conditions were used, depending on the system to be cyclized. Where selectivities were possible in the ring closure, the isomer ratios obtained were in accord with an aryl radical as the reactive ...

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