Technology Process of 2-phenyl-3-(cyclopentadienyl dicarbonyl iron)-5,5-diphenyl-2-cyclopentenone
There total 1 articles about 2-phenyl-3-(cyclopentadienyl dicarbonyl iron)-5,5-diphenyl-2-cyclopentenone which
guide to synthetic route it.
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synthetic route:
- Guidance literature:
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In
dichloromethane; benzene;
N2-atmosphere; addn. of slight excess of ketene (in C6H6) to Fe-complex soln. (in CH2Cl2) at -40°C, warming to room temp., stirring (5 h); concn. (reduced pressure), chromy. (Al2O3, pentane/CH2Cl2=1:3), evapn., crystn. (CH2Cl2/pentane); elem. anal.;
DOI:10.1016/S0020-1693(00)95707-4
- Guidance literature:
-
In
tetrahydrofuran; diethyl ether;
byproducts: 3-methyl-2,5,5-triphenyl-2-cyclopentenone; N2-atmosphere; dropwise addn. of MeLi (in Et2O) to Fe-complex (in THF) at 0°C, stirring at 0°C for 3 min or 3 h; treatment with satd. NaCl, extn. into ether, drying (Na2SO4), chromy. (SiO2, petroleum ether/Me2CO=10:1); yield increasing from 43% (3 min reaction time) to 47% (3 h);
DOI:10.1016/0022-328X(94)05071-I