Allylation of Active Methylene Compounds with Allyl Oxime Carbonates Catalyzed by Pd(0)
作者:Osamu Suzuki、Yoshiharu Hashiguchi、Seiichi Inoue、Kikumasa Sato
DOI:10.1246/cl.1988.291
日期:1988.2.5
Allylation of active methylene compounds catalyzed by a palladium(0)-phosphine system took place highly stereoselectively by employing allyl oxime carbonates as the allylating reagent.
Tandem Oxidation Processes: The Direct Conversion of Activated Alcohols into Oximes; Synthesis of Citaldoxime
作者:Richard J. Taylor、Hisashi Kanno
DOI:10.1055/s-2002-32949
日期:——
The direct conversion of primary alcohols into oximes is reported using manganese dioxide and alkoxylamines/hydroxylamine as their hydrochloride salts or supported on Amberlyst 15. This transformation has been applied to a range of benzylic, allylic and propargylic alcohols and utilised to prepare the natural product citaldoxime.
Palladium (II) catalysed tandem [2,3]-sigmatropic shift-1,3-dipolar cycloaddition processes in oxime O-allyl ethers
作者:Ronald Grigg、Jasothara Markandu
DOI:10.1016/0040-4039(91)80875-7
日期:1991.1
OximeO-allylethers are equilibrated with the corresponding N-allyl nitrones on treatment with 10 mol% PdCl2(MeCN)2 by a formal [2,3]-sigmatropic shift. The nitrones can be trapped both inter- and intra-molecularly by appropriate dipolarophiles to give cycloadducts in good to excellent yields.
Here, we report a three-component coupling reaction approach between an aldehyde, an allyloxyamine, and a maleimide toward isocluinoline derivatives. At first, an oxime O-allylic ether, prepared by dehydrative condensation of the aldehyde and the allyloxyamine, was reacted with the maleimide in the presence of a Pd2+ species. The cycloadduct obtained was then subjected to the Heck cyclization employing a Pd-0 species to give thermodynamically stable diastereomer of isoquinoline derivatives selectively in 25-78% yields. (c) 2007 Elsevier Ltd. All rights reserved.