(η5-diethylphosphonatomethylcyclopentadienyl)(η4-tetraphenylcyclobutadiene)cobalt

Base Information

• Chemical Name: (η5-diethylphosphonatomethylcyclopentadienyl)(η4-tetraphenylcyclobutadiene)cobalt
• CAS No.: 1178981-00-4
• Molecular Formula: C₃₈H₃₆CoO₃P
• Molecular Weight: 630.669

Synonyms:

Chemical Property of (η5-diethylphosphonatomethylcyclopentadienyl)(η4-tetraphenylcyclobutadiene)cobalt

Chemical Property:

Purity/Quality:

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Technology Process of (η5-diethylphosphonatomethylcyclopentadienyl)(η4-tetraphenylcyclobutadiene)cobalt

There total 1 articles about (η5-diethylphosphonatomethylcyclopentadienyl)(η4-tetraphenylcyclobutadiene)cobalt 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: 49.0%

(η(5)-hydroxymethylcyclopentadienyl)(η(4)-tetraphenylcyclobutadiene)cobalt(I) + sodium diethyl phosphite (2303-76-6,118080-94-7) → (η5-diethylphosphonatomethylcyclopentadienyl)(η4-tetraphenylcyclobutadiene)cobalt (1178981-00-4)

Guidance literature:

In toluene; reaction carried out under N2, to refluxed PhCH3 soln. of Na(P(O)(OEt)2)(freshly prepd. from 1.57 mmol of HP(O)(OEt)2 and excess Na) added Co( η4-C4Ph4)(η5-C5H4CH2OH) (0.78 mmol) for >10 min, refluxed for 4 h; cooled, quenched with 20%(w/v) aq. soln. of NaHCO3, after 20 min organiclayer septd., washed with H2O, dried over MgSO4, filtered, concentrated , chromd. (silica; CH2Cl2, CH2Cl2-pentane), recrystd. from CH2Cl2-pentane; elem. anal., XRD;

DOI:10.1016/j.jorganchem.2010.12.026

Reference yield: 54.0%

(η5-formylcyclopentadinyl)(η4-tetramethylcyclobutadiene)cobalt (813420-15-4) + (η5-diethylphosphonatomethylcyclopentadienyl)(η4-tetraphenylcyclobutadiene)cobalt (1178981-00-4) → (E-(η5-((η5-cyclopentadienyl)(η4-tetraphenylcyclobutadiene)cobalt)ethenylcyclopentadienyl))(η4-tetramethylcyclobutadiene)cobalt + E-[1,2-[bis(η5-cyclopentadienyl)(η4-tetraphenylcyclobutadiene)cobalt]ethene]

Guidance literature:

With tert-butyllithium; In tetrahydrofuran; pentane; (N2); addn. of t-BuLi in pentane dropwise to cooled soln. (-78°C)of (C4Ph4)Co(C5H4CH2PO(OEt)2) in THF; stirring at this temp. for 1 h; w arming to room temp.; addn. of (C5H4CHO)Co(C4Me4); stirring overnight; quenching with H2O; extn. of org. layer with CH2Cl2; washing with brine;sepn., drying over MgSO4, filtration, concn., chromy. on silica (pentan e/CH2Cl2; 4:3); elem. anal.;

DOI:10.1016/j.jorganchem.2009.04.004

Reference yield: 49.0%

dichloromethane (75-09-2) + (η5-formylcyclopentadinyl)(η4-tetraethylcyclobutadiene)cobalt (1178980-87-4) + (η5-diethylphosphonatomethylcyclopentadienyl)(η4-tetraphenylcyclobutadiene)cobalt (1178981-00-4) → E-[1,2-[bis(η5-cyclopentadienyl)(η4-tetraphenylcyclobutadiene)cobalt]ethene] + (E-(η5-((η5-cyclopentadienyl)(η4-tetraphenylcyclobutadiene)cobalt)ethenylcyclopentadienyl))(η4-tetraethylcyclobutadiene)cobalt dichloromethane hemisolvate

Guidance literature:

With tert-butyllithium; In tetrahydrofuran; pentane; (N2); addn. of t-BuLi in pentane dropwise to cooled soln. (-78°C)of (C4Ph4)Co(C5H4CH2PO(OEt)2) in THF; stirring at this temp. for 1 h; w arming to room temp.; addn. of (C5H4CHO)Co(C4Et4); stirring overnight; quenching with H2O; extn. of org. layer with CH2Cl2; washing with brine;sepn., drying over MgSO4, filtration, concn., chromy. on silica (pentan e gradually changed to pentane/CH2Cl2; 2:1); elem. anal.;

DOI:10.1016/j.jorganchem.2009.04.004

upstream raw materials:

sodium diethyl phosphite

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