12147-92-1Relevant academic research and scientific papers
Acid catalysed complexation of arenes with Cr(CO)6
Hrnciar, Peter,Toma, Stefan
, p. 161 - 164 (1991)
Several acids were tested as potential catalysts for complexation of arenes with Cr(CO)6 in boiling decalin.Acetic acid was found to be an efficient catalyst for complexation of acyl- and acyloxybenzenes.A mixture of butanone or cyclohexanone and acetic acid, with THF and acetic acid was found to be an efficient catalytic system or complexation of other arenes.The complex (η2-acenaphthylene)4Cr(CO)2 was isolated during an attempt on acetic acid catalysed complexation of acenaphthylene with Cr(CO)6.
An improved method for the synthesis of η6-arenetricarbonylchromium complexes
Hudecek, Milan,Toma, Stefan
, p. 115 - 118 (2007/10/02)
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
ELECTROCHEMICAL REDUCTIVE ACYLATION OF (η6-arene)Cr(CO)3 COMPLEXES AND (benzphenone)2
Degrand, C.,Bikrani, M.,Gautheron, B.
, p. 111 - 118 (2007/10/02)
The electrochemical reductive acylation of (benzophenone)Cr(CO)3 and (benzophenone)2 has been performed in DMF, by electrochemical reduction of complexed ketones in the presence of acetic and benzoic anhydride in excess.Three complexed benzhydryl
Tricarbonylchromium Complexes of Aryltrimethylsilanes - Synthesis and Reactions
Effenberger, Franz,Schoellkopf, Klaus
, p. 4356 - 4376 (2007/10/02)
Tricarbonylchromium (TCC) complexes 3, 12 of aryltrimethylsilanes are synthesized by reaction of aryltrimethylsilanes 2 and phenylenebis(trimethylsilanes) 11, resp., with hexacarbonylchrom (1).Under basic catalysis 3 and 12 react - caused by the acceptor effect of the tricarbonylchromium (TCC) group - with aldehydes and ketones to give the TCC-alkyl(trimethylsilyl) ether complexes 4, 9, 13.Hydrolysis of 4, 13 accomplish TCC complexes 5 of substituted benzyl alcohols.The oxidative removal of the TCC group with iodine or sodium dichromate was demonstrated with 4a yieldi ng benzhydrol (7) and benzophenone (8f), respectively.Nucleophiles can be added to the aromatic ring of 4, 9, 13 by known methods; the TCC complexes 3, 12, therefore, can be used for the straightforward synthesis of multiply substituted arenes by combination of electrophilic carbodesilylation and nucleophilic addition.
Arene Tricarbonylchromium Complexes of Aromatic Aldehydes and Ketones
Effenberger, Franz,Schoellkopf, Klaus
, p. 4377 - 4384 (2007/10/02)
Arene tricarbonylchromium (TCC) complexes 2, 3 of aromatic aldehydes and ketones are prepared by carbodesilylation of TCC aryltrimethylsilane complexes 1 with dimethylformamide and benzoyl fluoride, resp., or by selective oxidation of the corresponding be
