The study of catalyst effects on the complexation of arenes with Cr(CO)6. An overview
New results from our thorough investigation of different catalystic effects on the rate and yields of complexation of arenes with Cr(CO) are presented with a short review of the subject.With decalin as solvent the following substances were found to be the best catalysts: butyl acetate, ethyl formate, and dimethyl succinate.Butyl acetate proved to be the catalyst also in di-n-butyl ether.Special attention was paid to the complexation of naphthalene, and chlorobenzene.Some unsuccessful attempts at asymmetric induction of complexation are also described.
A simple route to (η6-arene)tricarbonylchromium complexes and a systematic study of different catalysts for complexation of arenes with Cr(CO)6
A systematic investigation was made of the catalytic effect of different substances on complexation of toluene with Cr(CO)6. 1-3 molar equivalents of butyl acetate in refluxing decalin was found to be the best catalyst, providing that the complexation was carried out in a special apparatus described earlier.Comparable yields were obtained also in butyl acetate as a solvent, but the reaction time was more than doubled.The utility of the method was verified by complexation of 7 different benzene derivatives.
An improved method for the synthesis of η6-arenetricarbonylchromium complexes
A novel apparatus for the complexation of arenes with Cr(CO)6 is described.This, and the modification of the reaction procedure shortens the reaction time, and improves the yields of η6-arenetricarbonylchromium complexes.The method was tested f
Hudecek, Milan,Toma, Stefan
p. 115 - 118
(2007/10/02)
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