Da. Dixon et al., ON THE PROPOSED EXISTENCE OF A KETENE DERIVED FROM CARBON-MONOXIDE AND 1,3-DI-1-ADAMANTYLIMIDAZOL-2-YLIDENE, Tetrahedron letters, 36(5), 1995, pp. 645-648
The reaction of carbon monoxide with the stable carbene, 1,3-di-1-adam
antylimidazol-2-ylidene, is reinvestigated experimentally. With the ai
d of high level ab initio density functional theory calculations the p
redicted stability of the putative ketene product is determined. No ev
idence is found for the existence of a stable ketene product.