ISSN:
0009-2940
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Organic Syntheses by Means of Transition Metal Complexes, 6: Synthesis of Ketenimines via Ketenimine Complexes, Isocyanide Carbene Addition and Ketenimine Carbene Rearrangement in Metal ComplexesTransition metal carbene complexes of the Fischer type, e. g. pentacarbonyl(methoxymethyl-carbene)chromium(0), add isocyanides to give ketenimine complexes (1). Ligand displacement by excess isocyanide affords ketenimines (3), which can be isolated in good yields. In contrast to free ketenimine, the nucleophilic attack on ketenimine coordinated to a metal occurs at the terminal carbon atom leading to carbene complexes. The structures of the ketenimine complexes of chromium (1) and tungsten (2), the product of isomerization (5)(2) of the chromium complex, and the products formed by addition of methanol or water (6 and 7, resp.)(2) are discussed, using 13C NMR data.
Additional Material:
1 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19781110341
