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
申请人:SHELL INTERNATIONALE RESEARCH
MAATSCHAPPIJ B.V.
公开号:EP0440995A1
公开(公告)日:1991-08-14
This invention relates to a process for producing 1-octenes comprising reacting conjugated dienes and carboxylic acids in the presence of palladium, platinum or ruthenium catalysts to produce 2,7-alkadienyl esters, contacting the 2,7-alkadienyl escers with hydrogen to produce alkyl esters and subsequently pyrolyzing the alkyl esters to produce 1-octene and carboxylic acid.