Journal of Organic Chemistry p. 3513 - 3521 (1988)
Update date:2022-08-04
Topics:
Kyba, Evan P.
Liu, Shiuh-Tzung
Chockalingam, Kannappan
Reddy, B. Raghava
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)3RuII-, or (bipy)3RuII/CuII-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 intermediate.The precursor aminodiaryl ketones were obtained from the sequence ortho lithiation of an arylpivalamide, reaction withan aryl aldehyde to give a 2-pivalamidodiarylcarbinol, oxidation to give a 2-pivalamidodiaryl ketone, and hydrolysis to give the 2-aminodiaryl ketone.
View MoreContact:+852-8198 2399
Address:9E, Leapont Industrial Building, 18-28 Wo Liu Hang Road, Shatin, New Territories, Hong Kong
Nanyang Tianhua pharmaceutical Co.,Ltd.
Contact:+8618639816203
Address:Longsheng Industrial Park
Contact:0512-63006287
Address:no.88.YISHENG Road,etdz-WUJIANG,SUZHOU,CHINA
Beijing Green Guardee Technology CO,.LTD
Contact:+86-10-69706062
Address:F2 BLdj,5 No.37 Chaoqian Road
Jiangsu King Road New Materials Co., Ltd.
website:http://www.jskingroad.com
Contact:0519-85720726 0519-85720721 13584535752
Address:No.1,Weihua Road,Xinbei District,Changzhou City,Jiangsu Province
Doi:10.1002/jhet.3076
(2018)Doi:10.1021/om801204a
(2009)Doi:10.3762/bjoc.15.195
(2019)Doi:10.1021/jo00251a023
(1988)Doi:10.1002/anie.202002642
(2020)Doi:10.1246/cl.2009.206
(2009)