Cu(I)-catalyzed intramolecular cyclizations of substituted 2-iodobenzophenones under thermal and microwave conditions
摘要:
Novel, easy-to-perform and practical intramolecular Cu(I)-catalyzed cyclizations of substituted 2-iodobenzophenones under thermal and microwave conditions are reported. The isolated cyclized products under microwave conditions are obtained with high yields and with short reaction times offering a valuable and reliable alternative to other protocols for the synthesis of fluorene analogues. (C) 2013 Elsevier Ltd. All rights reserved.
Microwave-assisted intramolecular palladium-mediated cyclizations of <i>o</i>-iodobenzophenones for methoxy fluoren-9-ones
作者:Reda A. Haggam
DOI:10.1080/00397911.2022.2095210
日期:2022.7.18
irradiation is an effective tool in organic reactions that required long reaction times under thermal conditions. Herein substituted 2-iodobenzophenones were transformed into substituted fluoren-9-ones via cesium carbonate and bis(triphenylphosphine) palladium(II) chloride with 56–92% yields within 30–45 min under microwave irradiations. A remarkable decrease in the reaction time with high yield products was