125641-91-0Relevant academic research and scientific papers
Cycloaddition Reactions of Organometallic Complexes, XII. - Ketenimines from Isocyanides and Diazoalkanes: A New Cobalt-Assisted C-C Bond Forming Reaction
Strecker, Beate,Hoerlin, Gerhard,Schulz, Michael,Werner, Helmut
, p. 285 - 294 (2007/10/02)
The compounds C5H5Co(CNR)(PMe3) (1-3) react with diaryldiazomethanes (X)(Y)CN2 to give the C,C-bound ketenimine cobalt complexes C5H5Co2-C,C-RN=C=CXY>(PMe3) (4-9), while the reaction of 1-3 with 9-diazofluorene leads to the formation of N,C-bound ketenimine complexes C5H5Co2-N,C-RN=C=C(C12H8)>(PMe3) (11-13).The different bonding modes of the ketenimine ligands in 4-9 and 11-13, indicated already by the significantly different spectroscopic data, are shown by the X-ray structural analysis of 9-RCoSC (R= CHMePh; X and Y= 4-ClC6H4) and 12 (R= C6H11).On treatment of compounds 4, 6-9, 11, and 13 with an equimolar amount of iodine , free ketenimines are generated.The byproduct C5H5Co(PMe3)I2 can be transformed into the starting materials 1-3 in two steps via the cations (1+) as intermediates.
