1. The reaction proceeds through O alkylation of the carbonyls followed by an O to N rearrangement.

2. Iron and nickel carbonyls can deactivate the copper - based catalyst for methanol synthesis.

3. Over the past years, a considerable number of publications have appeared that focus on the enantioselective addition of Acetylenes to carbonyls and imines

4. The high pressure reactions catalysed by heavy metal acetylides, especially copper acetylide, or metal carbonyls are called Reppe Chemistry.

5. The activated carbon used for the absorptive separation of the carbonyls can be regenerated as often as desired, while both the adsorption capacity and quality remain unaltered.

6. Organometallic compound - Organometallic compound - Metal carbonyl Anions: More remarkable than the formation of zero-oxidation-state metal carbonyls is the reduction of many of these carbonyl compounds to metal carbonyl Anions, in which the metal has a negative oxidation state