pentacarbonyl[(methoxy)(4-methoxybenzylidene)]chromium⁽⁰⁾

Base Information

• Chemical Name: pentacarbonyl[(methoxy)(4-methoxybenzylidene)]chromium⁽⁰⁾
• CAS No.: 27437-03-2
• Molecular Formula: C₁₄H₁₀CrO₇
• Molecular Weight: 342.225
• Mol file: 27437-03-2.mol

Synonyms:pentacarbonyl[(methoxy)(4-methoxybenzylidene)]chromium⁽⁰⁾

Chemical Property of pentacarbonyl[(methoxy)(4-methoxybenzylidene)]chromium⁽⁰⁾

Chemical Property:

Purity/Quality:

Safty Information:

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Technology Process of pentacarbonyl[(methoxy)(4-methoxybenzylidene)]chromium⁽⁰⁾

There total 3 articles about pentacarbonyl[(methoxy)(4-methoxybenzylidene)]chromium⁽⁰⁾ 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: 70.0%

1-bromo-4-methoxy-benzene (104-92-7) + chromium(0) hexacarbonyl (199620-14-9,13007-92-6) + methyl trifluoromethanesulfonate (333-27-7) → pentacarbonyl[(methoxy)(4-methoxybenzylidene)]chromium(0) (27437-03-2)

Guidance literature:

With (t)BuLi; In diethyl ether; pentane; N2-atmosphere; addn. of (t)BuLi (2 equivs., pentane) to soln. of alkylbromide (Et2O) at -78°C, addn. to Cr(CO)6 (Et2O, 0°C), stirring for 1 h (room temp.), cooling (0°C), addn. of MeOTf (3 equivs.), stirring for 20 min at room temp.; pouring onto satd. aq. soln. of NaHCO3, extn. (hexane, 3x), drying (Na2SO4), evapn., chromy. (SiO2, hexane); NMR-spectroscopy;

DOI:10.1021/om9905198

Reference yield: 69.0%

1-bromo-4-methoxy-benzene (104-92-7) + trimethoxonium tetrafluoroborate (420-37-1) + chromium(0) hexacarbonyl (199620-14-9,13007-92-6) → pentacarbonyl[(methoxy)(4-methoxybenzylidene)]chromium(0) (27437-03-2)

Guidance literature:

1-bromo-4-methoxy-benzene; chromium⁽⁰⁾ hexacarbonyl; With n-butyllithium; In tetrahydrofuran; at -78 - 20 ℃;

trimethoxonium tetrafluoroborate; In dichloromethane; water; at 0 - 20 ℃;

DOI:10.1038/ja.2016.141

Reference yield:

(dimethoxy(4-methoxyphenyl)methyl)pentacarbonylchromium(1-) → pentacarbonyl[(methoxy)(4-methoxybenzylidene)]chromium(0) (27437-03-2)

Guidance literature:

With C₆H₅OH or BrC₆H₄OH or 3,5-dichlorophenol buffers; In methanol; excess of buffer was added to freshly generated (0.5 - 2 s) soln. of complex in CH3OH (the stability of the soln. could be enhanced by adding CH3SO3H 2.5E-3 M) in a stopped-flow spectrophotometer at 25°C; moritoring around 400 nm; Kinetics;

DOI:10.1021/ja994174w

upstream raw materials:

1-bromo-4-methoxy-benzene

chromium⁽⁰⁾ hexacarbonyl

methyl trifluoromethanesulfonate

trimethoxonium tetrafluoroborate

Downstream raw materials:

pentacarbonyl(pyridine)chromium⁽⁰⁾

bis(pyridine)chromiumtetracarbonyl

1,2-dimethoxy-1,2-bis(4-methoxyphenyl)ethene

(E)-1,3,4,6-tetra(4-methoxyphenyl)-3-hexene-1,5-diyne