Russian Chemical Bulletin p. 675 - 680 (1994)
Update date:2022-07-30
Topics:
Loim, N. M.
Ginzburg, A. G.
Batsanov, A. S.
Struchkov, Yu. T.
Galakhov, M. V.
Vorontzov, E. V.
The reaction of dicymanthrenyl ketone with the Grignard reagent 2,4,6-Me3C6H2MgBr in THF occurs as the insertion of the mesityl substituent in the α-position of one of the cyclopentadienyl rings to give (2-mesitylcymantrenyl) ketone (4), rather than as addition at the C=O group.Reduction of 4 by NaBH4 in a THF-EtOH mixture affords (2-mesitylcymantrenyl)cymantrenylmethanol (5).Ionic hydrogenation of 5 with the HSiEt3/CF3COOH system gives (2-mesitylcymantrenyl)cymantrenylmethane (7).The structure of alcohol 5 has been established by X-ray diffraction analysis. - Key words: η-complexes, cyclopentadienyl manganese, manganese carbonyls, ketones, Grignard reagents, planar chirality, X-ray diffractional analysis.
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