Aktivierte Chinone: Substitution von Azulenen, Benzofuran und Indolen durch 2-Methoxycarbonyl-1,4-benzochinon. Regiospezifische Synthesen von Polymethoxy-fluorenonen und eine neue Synthese des 2,6-Dihydro-naphtho[1,2,3-cd]indol-6-on-Systems
作者:Joannis N. Tsaklidis、Arnold Hofer、Conrad Hans Eugster
DOI:10.1002/hlca.19770600330
日期:1977.4.20
Activated quinones: substitution reactions by methoxy-carbonyl-1,4-benzoquinone of azulenes, benzofuran and indoles; regiospecific syntheses of polymethoxy-fluorenones; a new synthesis of the 2,6-dihydro-naphtho[1,2,3-cd]indol-6-one system.
活化的醌:天青石,苯并呋喃和吲哚的甲氧基-羰基-1,4-苯醌的取代反应;聚甲氧基芴酮的区域特异性合成;2,6-二氢萘并[1,2,3- cd ]吲哚-6-一系统的新合成。
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
Cu(I)-catalyzed intramolecular cyclizations of substituted 2-iodobenzophenones under thermal and microwave conditions
作者:Reda A. Haggam
DOI:10.1016/j.tet.2013.05.077
日期:2013.8
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.
TSAKLIDIS J. N.; HOFER A.; EUGSTER C. H., HELV. CHIM. ACTA <HCAC-AV>, 1977, 60, NO 3, 1033-1060