A New Application of Hypervalent Iodine (λ<sup>5</sup>) Reagents with Organosulfonic Acids for Direct α-Organosulfonyloxylation Carbonyl Compounds
作者:Krishnacharya Akamanchi、Ulhas Mahajan
DOI:10.1055/s-2008-1072508
日期:——
Hypervalent iodine (λ 5 ) reagents in combination with P-toluenesulfonic acid when reacted with ketones under reflux temperature in acetonitrile gave α-tosyloxy ketones in moderate to excellent yields. The reaction was developed further for both ketones and dicarbonyl compounds using Dess-Martin periodinane reagent in combination with P-toluenesulfonic acid and methanesulfonic acid, to give mono-α-tosyloxy
One-Pot Protocol for Synthesis of<font>α</font>-Organosulfonyloxy Ketones from Secondary Alcohols Using Hypervalent Iodine(V)–Mediated Oxidations
作者:Swapnil S. Deshmukh、Sameerana N. Huddar、Krishnacharya G. Akamanchi
DOI:10.1080/00397910902730952
日期:2009.7.29
Abstract α-Tosyloxy ketones and α-mesyloxy ketones were directly prepared from alcohols in one pot by treatment with hypervalentiodine(V) reagents in combination with p-toluenesulfonic acid and methanesulfonic acid, respectively, in moderate to good yields. Reactions were also feasible under solvent-free conditions.
<i>m</i>-Iodosylbenzoic Acid: Recyclable Hypervalent Iodine Reagent for <font>α</font>-Tosyloxylation and <font>α</font>-Mesyloxylation of Ketones
作者:Mekhman S. Yusubov、Tatyana V. Funk、Roza Y. Yusubova、Galina Zholobova、Andreas Kirschning、Joo Yeon Park、Ki-Whan Chi
DOI:10.1080/00397910902838870
日期:2009.10.12
m-Iodosylbenzoic acid-mediated reactions of various carbonyl compounds provided -organosulfonyloxy carbonyl compounds in good yields. The final products could be easily isolated without any chromatographic purification by simple treatment of the crude mixture with an anionic exchange resin.
Direct .alpha.-mesyloxylation of ketones and .beta.-dicarbonyl compounds with [hydroxy(mesyloxy)iodo]benzene
作者:Jayant S. Lodaya、Gerald F. Koser
DOI:10.1021/jo00236a048
日期:1988.1
LODAYA, JAYANT S.;KOSER, GERALD F., J. ORG. CHEM., 53,(1988) N 1, 210-212