Abstract
The acetylido iron hydride trans-[FeH(C≡CH)(depe)2] reacts with an excess of CO2 at ambient pressure and temperature to form a five-membered metalalactone cis-[Fe(OC(═O)CHCH-κ2C,O)(depe)2]. The reaction appears to proceed by electrophilic addition of CO2 to the β-carbon of the coordinated acetylide and cyclization to form the metalalactone product. At low temperature, a second molecule of CO2 is incorporated to give a carboxy-substituted metalalactone cis-[Fe(OC(═O)C(C(═O)OH)CH-κ2C,O)(depe)2]. When the initial metal acetylido hydride is substituted at the β-acetylenic carbon, the addition of CO2 results in a metalalactone where the substituent is in the position adjacent to the carbonyl in the metalalactone ring.
Original language | English |
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Pages (from-to) | 1580-1589 |
Number of pages | 10 |
Journal | Organometallics |
Volume | 39 |
Issue number | 9 |
Early online date | 30 Jan 2020 |
DOIs | |
Publication status | Published - 11 May 2020 |
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Organic Chemistry
- Inorganic Chemistry