Oxidative coupling of activated alkynes with palladium(0) olefin complexes:Side production of the highly symmetric hexamethyl mellitate species under mild conditions at low alkyne/complex molar ratios

Luciano Canovese; Fabiano Visentin; Gavino Chessa; Claudio Santo; Carlo Levi; Paolo Uguagliati

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Oxidative coupling of activated alkynes with palladium(0) olefin complexes:Side production of the highly symmetric hexamethyl mellitate species under mild conditions at low alkyne/complex molar ratios

机译：活化炔烃与钯（0）烯烃络合物的氧化偶联：在温和条件下，低炔烃/络合物摩尔比下，高对称性六甲基甲磺酸盐物种的副产物

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The reactions of oxidative coupling of dimethylacetylene dicarboxylate (DMA) with palladium (0) olefin complexes bearing a pyr-idylthioether as ancillary ligand give rise to the corresponding palladacyclopentadienyl complexes as the main product and in some cases to the highly symmetric hexamethyl mellitate molecule,especially when a low alkyne(DMA)/complex ratio is employed.A plausible mechanism based on several pieces of experimental evidence is proposed,and the most effective complexes promoting the hexamethyl mellitate synthesis were identified.

机译：二羧酸二甲基乙炔酯（DMA）与带有吡咯基硫醚作为辅助配体的钯（0）烯烃配合物的氧化偶联反应产生相应的四环环戊二烯基配合物作为主要产物，在某些情况下会生成高度对称的六甲基甲磺酸盐分子当采用低炔烃（DMA）/配合物比率时，基于几项实验证据提出了一个合理的机理，并确定了最有效的促进六甲基乙酸甲酯合成的配合物。

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来源
《Inorganic Chemistry Communications》 |2006年第4期|共3页
作者
Luciano Canovese; Fabiano Visentin; Gavino Chessa; Claudio Santo; Carlo Levi; Paolo Uguagliati;
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正文语种 eng
中图分类无机化学;
关键词
Hexamethyl mellitate; Oxidative coupling; Pd(0) and Pd(II) pyridylthioether complexes; Activated alkynes;

机译：六甲基铝酸酯;氧化偶联;Pd（0）和Pd（II）吡啶硫醚配合物;活化炔烃;

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1. Oxidative coupling of activated alkynes with palladium(0) olefin complexes:Side production of the highly symmetric hexamethyl mellitate species under mild conditions at low alkyne/complex molar ratios [J] . Luciano Canovese, Fabiano Visentin, Gavino Chessa, Inorganic Chemistry Communications . 2006,第4期

机译：活化炔烃与钯（0）烯烃络合物的氧化偶联：在温和条件下，低炔烃/络合物摩尔比下，高对称性六甲基甲磺酸盐物种的副产物
2. Palladium acetate complexes bearing chelating N-heterocyclic carbene (NHC) ligands: Synthesis and catalytic oxidative homocoupling of terminal alkynes [J] . Hsiao TH, Wu TL, Chatterjee S, Journal of Organometallic Chemistry . 2009,第25期

机译：带有螯合N-杂环卡宾（NHC）配体的乙酸钯配合物：末端炔烃的合成和催化氧化均偶联
3. Copper-catalyzed alkyne-aryne coupling reaction under microwave conditions: preparation of unsymmetric and symmetric di-substituted alkynes [J] . Shashidhar Kumar Akubathini, Ed Biehl Tetrahedron letters: The International Journal for the Rapid Publication of Preliminary Communications in Organic Chemistry . 2009,第16期

机译：微波条件下铜催化的炔烃-芳烃偶联反应：不对称和对称的二取代炔烃的制备
4. Studies of coupling reactions of Fischer carbene complexes with highly conjugated alkynes. [D] . Duan, Shaofeng. 2007

机译：费歇尔卡宾配合物与高度共轭炔烃的偶联反应研究。
5. The Homocoupling Reaction of Aromatic Terminal Alkynes by a Highly Active Palladium(II)/AgNO3 Cocatalyst in Aqueous Media Under Aerobic Conditions [O] . Mengping Guo, Bo Chen, Meiyun Lv, 2016

机译：需氧条件下高活性钯（II）/ AgNO3助催化剂在水性介质中芳烃末端炔的均相偶联反应
6. Oxidative coupling of activated alkynes with palladium(0) olefin complexes: Side production of the highly symmetric hexamethyl mellitate species under mild conditions at low alkyne/complex molar ratios [O] . CANOVESE L, VISENTIN F, CHESSA G., 2006

机译：活化炔烃与钯（0）烯烃络合物的氧化偶联：在低炔烃/络合物摩尔比的温和条件下，副产物高度对称的六甲基熔铝酸酯的副产物

Oxidative coupling of activated alkynes with palladium(0) olefin complexes:Side production of the highly symmetric hexamethyl mellitate species under mild conditions at low alkyne/complex molar ratios

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