Pd-catalyzed ligand-free desulfitative Heck reaction with arenesulfinic acid salts under air
作者:Sai Hu、Ping Xia、Kai Cheng、Chenze Qi
DOI:10.1002/aoc.2970
日期:2013.3
Palladium‐catalyzed cross‐coupling reactions of various aryl sulfinic acidsalts with a wide variety of vinyl substrates have been achieved in good to excellent yields under simple aerobic conditions at 70°C with the assistance of Cu(II) salts. The reaction can be accelerated by the combination of DMSO with THF. The reported Matsuda–Heck type coupling reactions are tolerant to the common functional
Synthesis of 1,3-bis-(5-ferrocenylisoxazole-3-yl) benzene-derived palladium(II) acetate complex and its application in Mizoroki–Heck reaction in an aqueous solution
作者:Yong-jia Shang、Jian-wei Wu、Chen-li Fan、Jin-song Hu、Ben-ye Lu
DOI:10.1016/j.jorganchem.2008.06.020
日期:2008.9
and characterization of 1,3-bis-(5-ferrocenylisoxazole-3-yl) benzene-derived palladium(II) acetate complex were described and its application in Heck coupling reactions in an aqueous solution was studied. Complex 5 had been demonstrated to be a highly stable, active and efficientcatalyst for Mizoroki–Heck coupling reactions.
Palladium/Tetraphosphine Catalysed Heck Reaction with ortho-Substituted Aryl Bromides
作者:Marie Feuerstein、Henri Doucet、Maurice Santelli
DOI:10.1055/s-2001-18752
日期:——
The tetraphosphine cis,cis,cis-1,2,3,4-tetrakis(diphenylphosphinomethyl)cyclopentane associated to [PdCl(C3H5)]2 catalyses the Heck reaction of butyl acrylate with a wide range of sterically demanding aryl bromides, furnishing the addition product in high yields. Turnover numbers as high as 630-89 000 have been obtained using ortho-substituted aryl bromides and 43-2600 with di-ortho-substituted aryl bromides in the presence of this catalyst.
Sterically Bulky Thioureas as Air- and Moisture-Stable Ligands for Pd-Catalyzed Heck Reactions of Aryl Halides
作者:Dan Yang、Ying-Chun Chen、Nian-Yong Zhu
DOI:10.1021/ol049697+
日期:2004.5.1
We demonstrate that sterically bulky N,N'-disubstituted cyclic thiourea-Pd(0) complexes are air- and moisture-stable and highly active catalysts for palladium-catalyzed Heck reaction of aryl iodides and bromides with olefins (TONs up to 500000 for the reaction of PhI and methyl acrylate). Even activated arylchlorides can undergo complete conversion in Bu(4)NBr in the presence of 1 mol % Pd catalyst
The invention provides N,N′-disubstituted monothiourea or bis-thiourea-Pd(0) complexes that are useful as catalysts for palladium-catalyzed Heck reaction of aryl iodides and bromides with olefins, and as catalysts for palladium catalyzed Suzuki reactions of organoboric compounds and aryl halides.