A new synthesis of dienone lactones using a combination of hypervalent iodine(iii) reagent and heteropoly acid
作者:Kayoko Hata、Hiromi Hamamoto、Yukiko Shiozaki、Yasuyuki Kita
DOI:10.1039/b501792k
日期:——
The oxidation of non-phenolic alkanoic acid derivatives to oxygen heterocycles was investigated; a new oxidative route to dienone lactones has been developed using a combination of hypervalent iodine(III) reagent, phenyliodine(III) bis(trifluoroacetate)
(PIFA), and heteropoly acid (HPA).
Organoiodine-Catalyzed Oxidative Spirocyclization of Phenols using Peracetic Acid as a Green and Economic Terminal Oxidant
作者:Yutaka Minamitsuji、Daishi Kato、Hiromichi Fujioka、Toshifumi Dohi、Yasuyuki Kita
DOI:10.1071/ch09148
日期:——
The use of peraceticacid as a green and economical terminal oxidant in fluoroalcohol solvents could provide a practical iodoarene-catalyzed oxidation of phenols to give spirodienones. Acetic acid and water were the only co-products and waste, and thus this catalytic approach utilizing fluoroalcohol media could simplify the reaction workup procedure for product isolation.
Thallium in organic synthesis. 61. Intramolecular capture of radical cations from thallium(III) trifluoroacetate oxidation of arylalkanoic acids and arylalkanols. New routes to oxygen heterocycles
作者:Edward C. Taylor、Juan G. Andrade、Gerhardus J. H. Rall、Ignatius J. Turchi、Kosta Steliou、G. Erik Jagdmann、Alexander McKillop
DOI:10.1021/ja00413a013
日期:1981.11
Efficient phenolic oxidations using μ-oxo-bridged phenyliodine trifluoroacetate
作者:Toshifumi Dohi、Teruyoshi Uchiyama、Daisuke Yamashita、Naohiko Washimi、Yasuyuki Kita
DOI:10.1016/j.tetlet.2010.12.037
日期:2011.4
The excellent oxidizing behavior of the mu-oxo-bridged phenyliodine trifluoroacetate 1 is revealed during the phenolic oxidations mediated by hypervalent iodine(III) reagents. The use of the mu-oxo-bridged compound 1 instead of PhI(OAc)(2) (PIDA) and PhI(OCOCF3)(2) (PIFA) during the oxidative cyclization of phenols involving carbon-oxygen, carbon-nitrogen, and carbon-carbon bond formations could produce spirocyclized cyclohexadienones in comparable or somewhat better yields. Thus, we have concluded that the unique reagent 1 is a promising alternative to PIDA and PIFA, and the use of reagent 1 as a reasonable choice is recommended for the hypervalent iodine(III)-mediated phenolic oxidations as well as other transformations. (C) 2010 Elsevier Ltd. All rights reserved.
Nishiyama, Atsuko; Eto, Hideo; Terada, Yukimasa, Chemical and pharmaceutical bulletin, 1983, vol. 31, # 8, p. 2845 - 2852