<i>m</i>-Iodosylbenzoic Acid as a Convenient Recyclable Reagent for Highly Efficient RuCl<sub>3</sub>-Catalyzed Oxidation of Alcohols to Carbonyl Compounds
oxidizes primary and secondary alcohols to the respective carbonyl compounds in the presence of RuCl 3 (0.5 mol%) at room temperature in aqueous acetonitrile. Separation of pure products is conveniently achieved by scavenging any aryl iodide by ion exchange with IRA-900 (hydroxide form) or by simple extraction of the basic aqueous solution with water. The reduced form of the reagent, m-iodobenzoic acid, can
Proton abstraction and electrophilic quench at C-2 of imidazolidines
作者:Iain Coldham、Robert A. Judkins、David R. Witty
DOI:10.1016/s0040-4020(98)00877-1
日期:1998.11
Imidazolidines bearing tert-butoxycarbonyl groups on both nitrogen atoms have been prepared in order to test their ability to act as acyl anion equivalents. Proton abstraction was achieved successfully at C-2, between the two nitrogen atoms, using the base sec-butyllithium. The resulting organolithium was trapped with a variety of electrophiles. The imidazolidine can be cleaved with acid to generate the desired carbonyl compound. Using chiral imidazolidines and aldehyde electrophiles, the carbon-carbon bond formation occurred with low diastereoselectivities. (C) 1998 Elsevier Science Ltd. All rights reserved.
JULIA M.; KIGHINI A.; UGUEN D., J. CHEM. SOC. PERKIN TRANS., 1978, PART 1, NO 12, 1646-1651
作者:JULIA M.、 KIGHINI A.、 UGUEN D.
DOI:——
日期:——
KATRITZKY, ALAN R.;YANG, ZHIJUN;LAM, JAMSHED N., J. ORG. CHEM. , 56,(1991) N, C. 2143-2147
作者:KATRITZKY, ALAN R.、YANG, ZHIJUN、LAM, JAMSHED N.
DOI:——
日期:——
MATTESON, D. S.;SADHU, KIZHAKETHIL, MATHEW, ORGANOMETALLICS, 1984, 3, N 4, 614-618