A general synthesis of substituted fluorenones and azafluorenones

…, ST Liu, K Chockalingam, BR Reddy

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

Full Text: HTML

Citation Number: 48

Abstract

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 ...