Abstract
The reactivity of alkyne-dicobalt hexacarbonyls changes dramatically depending on the nature of the coordinated Lewis base. Phosphines and phosphites stabilize alkyne-dicobalt hexacarbonyls when they coordinate. In contrast, sulfides and amines make the complexes reactive. The difference in σ-basicity and π-acidity on the central atom dramatically changes the reaction course of the resulting complexes. The coordination of primary amines promotes the stoichiometric Pauson-Khand reaction, the reduction of carbon-chlorine and carbon-oxygen bonds, hydrocarbamoylation and decomplexation. While ethers and alcohols also activate alkyne-dicobalt hexacarbonyls, the degree of activation appears less than amines. Ethers and alcohols are effective for the catalytic Pauson-Khand reaction.
Original language | English |
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Pages (from-to) | 179-194 |
Number of pages | 16 |
Journal | Reviews on Heteroatom Chemistry |
Volume | 21 |
Publication status | Published - 2000 Dec 1 |
Keywords
- Alcohol
- Amine
- Carbonyl
- Cobalt
- Ether
- Phosphine
- Phosphite
- Sulfide
- Water
ASJC Scopus subject areas
- Inorganic Chemistry