pentacarbonyl(tellurobenzaldehyde)tungsten

Base Information

• Chemical Name: pentacarbonyl(tellurobenzaldehyde)tungsten
• CAS No.: 137229-44-8
• Molecular Formula: C₁₂H₆O₅TeW
• Molecular Weight: 541.627

Synonyms:

Chemical Property of pentacarbonyl(tellurobenzaldehyde)tungsten

Chemical Property:

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Technology Process of pentacarbonyl(tellurobenzaldehyde)tungsten

There total 1 articles about pentacarbonyl(tellurobenzaldehyde)tungsten which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield:

NEt4((CO)5W{C(H)(OCH3)C6H5}) + PPN+{TeCN}- → pentacarbonyl(tellurobenzaldehyde)tungsten (137229-44-8)

Guidance literature:

With HBF₄*(C₂H₅)2O; In dichloromethane; pentane; byproducts: CH3OH, N(C2H5)4BF4, CN(1-); generation of (CO)5WC(C6H5)H from N(C2H5)4-salt and HBF4*(C2H5)2O in CH2Cl2 at -90°C, addn. of pentane of -90°C, chromatography at -75°C, concn. of the dark red fraction in the cold, addn. of TeCN(1-) in CH2Cl2 at -90°C;; addn. of pentane of -90°C, filtration over silicagel at -80°C; no further isolation;;

DOI:10.1016/0022-328X(91)80121-Y

Reference yield:

pentacarbonyl(tellurobenzaldehyde)tungsten (137229-44-8) + cyclopenta-1,3-diene (542-92-7,25568-84-7,7313-32-8) → exo-pentacarbonyl(3-phenyl-2-tellurobicyclo{2.2.1}hept-5-ene)tungsten + endo-pentacarbonyl(3-phenyl-2-tellurobicyclo{2.2.1}hept-5-ene)tungsten

Guidance literature:

In dichloromethane; pentane; addn. of diene in CH2Cl2 to the soln. at -90°C, filtration over silicagel, eluation with pentane/CH2Cl2 (2:1), removal of solvent at -70°C in high vac.;; raw product-mixture: ratio exo:endo=11:1; separation of exo-compound by chromatography at -50°C at silicagel (pentane/CH2Cl2=10:1), evapn. of first fraction in high vac., recrystn. from pentane; elem. anal;;

DOI:10.1016/0022-328X(91)80121-Y

Reference yield:

pentacarbonyl(tellurobenzaldehyde)tungsten (137229-44-8) + 2,3-dimethyl-buta-1,3-diene (513-81-5) → pentacarbonyl{4.5-dimethyl-2-phenyl-tellurocyclohex-4-ene}tungsten + pentacarbonyl{4.5-dimethyl-2-phenyl-tellurocyclohex-4-ene}tungsten

Guidance literature:

In dichloromethane; pentane; addn. of diene to the soln. at -90°C, stirring 2-5min, filtration over silicagel, eluation with pentane/CH2Cl2 (2:1) at -80°C, removal of solvent at -70°C in high vac., chromatography at -50°C (pentane/CH2Cl2=20:1);; first yellow fraction contains product, removal of solvent in high vac., recrystn. from pentane; no separation of isomers (eq-(CO)5W : axial-(CO)5W = 1.4:1) by chromy. possible; elem. anal.;;

DOI:10.1016/0022-328X(91)80121-Y

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