(CO)5CrPBrC₆H₅PBr(C₆H₅)Cr(CO)5

Base Information

• Chemical Name: (CO)5CrPBrC₆H₅PBr(C₆H₅)Cr(CO)5
• CAS No.: 88930-30-7
• Molecular Formula: C₂₂H₁₀Br₂Cr₂O₁₀P₂
• Molecular Weight: 760.063
• Mol file: 88930-30-7.mol

Synonyms:

Chemical Property of (CO)5CrPBrC₆H₅PBr(C₆H₅)Cr(CO)5

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of (CO)5CrPBrC₆H₅PBr(C₆H₅)Cr(CO)5

There total 2 articles about (CO)5CrPBrC₆H₅PBr(C₆H₅)Cr(CO)5 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: 40.0%

(CO)5CrP(C6H5)Cr(CO)5P(C6H5)Cr(CO)5 → (CO)5CrPBrC6H5PBr(C6H5)Cr(CO)5 (88478-91-5,88930-30-7)

Guidance literature:

With Br₂; In hexane; (N2); soln. of Cr complex was stirred for 90 min at 65°C, after cooling soln. of Br2 in hexane was added until mixt. became yellow; solvent was evapd. at E-2 mbar in the dark, residue was washed with pentane and filtered through Kieselgur in the dark; recrystn. from toluene/pentane; elem. anal.;

DOI:10.1016/0022-328X(85)87141-2

Reference yield:

meso-1,2-Diphenyl-1,2-dibromodiphosphane (18869-04-0,88017-79-2,88017-80-5) + chromium(0) hexacarbonyl (199620-14-9,13007-92-6) → C6H5PBr2Cr(CO)5 (75789-41-2) + (CO)5CrPBrC6H5PBr(C6H5)Cr(CO)5 (88478-91-5,88930-30-7) + (CO)5CrC6H5(Br)PP(Br)C6H5

Guidance literature:

In tetrahydrofuran; byproducts: (PhP)n[Cr(CO)x]y; Irradiation (UV/VIS); N2-atmosphere; photolysis of Cr(CO)6 (Hanau TQ 150 lamp, 5.5 h), addn. of 0.5 equiv. phosphine, stiring (2 h); evapn. (after 6 h, vac., room temp.), suspending in THF (-35°C, 0-20 d), filtration, washing (PhMe), drying; yield depending on time of contact with THF; diastereomers not sepd., detd. by (31)P-NMR spectroscopy and thin-layer chromy.; elem. anal.;

DOI:10.1016/S0022-328X(00)99276-3

Reference yield: 45.0%

(CO)5CrPBrC6H5PBr(C6H5)Cr(CO)5 (88478-91-5,88930-30-7) → decacarbonyl-μ-1,2-dibutyl-1,2-diphenyldiphosphanedichromium (88930-34-1,88478-96-0)

Guidance literature:

With n-butyllithium; In toluene; byproducts: LiBr; N2-atmosphere; dropwise addn. equimolar amt. of n-BuLi to suspn. of Cr-complex (-40°C), warming to room temp., stirring (12 h); chromy. (SiO2, pentane/toluene = 1:1 v/v), concn., addn. of pentane, cooling (-30°C, 12 h, crystn.), filtration at -30°C; elem. anal.;

DOI:10.1016/S0022-328X(00)99276-3

upstream raw materials:

meso-1,2-Diphenyl-1,2-dibromodiphosphane

chromium⁽⁰⁾ hexacarbonyl

Downstream raw materials:

decacarbonyl-μ-1,2-dibutyl-1,2-diphenyldiphosphanedichromium