Arylmaleic anhydrides via Heck arylation of fumaric acid
作者:Alexander I. Roshchin
DOI:10.1016/j.tetlet.2010.05.023
日期:2010.7
Palladium-catalyzed arylation of fumaric acid with aryl iodides is found to be a very simple, economic and scalable approach to arylmaleicanhydrides. The reaction is facilitated by the presence of donor moieties on the aryl fragment and does not occur with strong acceptor groups.
Synthesis of Maleic Anhydrides and Maleic Acids by Pd-Catalyzed Oxidative Dicarbonylation of Alk-1-ynes
作者:Bartolo Gabriele、Lucia Veltri、Giuseppe Salerno、Mirco Costa、Gian Paolo Chiusoli
DOI:10.1002/ejoc.200210706
日期:2003.5
effectively promotes the Pd-catalyzedoxidative carbonylation of terminal alkynes to give maleicanhydrides in fair yields. Reactions were carried out in aqueous dioxane at 60−80 °C in the presence of catalytic amounts of PdI2 in conjunction with KI and under a 4:1:10 mixture of CO/air/CO2 (60 atm total pressure at 25 °C). By working in the presence of a large excess of water, maleicacids were formed selectively
High-pressure-assisted addition of (methoxyphenyl)maleic anhydrides to dienes. Synthesis of 3a-aryltetrahydroisoindole-1,3-diones
作者:A. I. Roshchin、Yu. V. Kuznetsov、E. V. Polunin
DOI:10.1007/s11172-007-0081-5
日期:2007.3
A new synthesis of (2-and 4-methoxyphenyl)maleicanhydrides was accomplished, the reactions of which with cyclopentadiene and 3-sulfolene, serving as a 1,3-butadiene equivalent, furnished the [4+2]-cycloadducts. The latter were converted into imides of 2-aryl-bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic and 1-arylcyclohex-4-ene-1,2-dicarboxylic acids respectively.