Journal
ACS CATALYSIS
Volume 6, Issue 10, Pages 6906-6910Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acscatal.6b02265
Keywords
chemical fixation; carbon dioxide; epoxides; cyclic carbonates; phosphonium salts
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Funding
- Japan Society for the Promotion of Science (JSPS) [JP15H06242]
- Grants-in-Aid for Scientific Research [15H06242] Funding Source: KAKEN
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Phosphonium salts exhibit great utility in organic synthesis. However, tetraarylphosphonium salts (TAPS) have found limited use as catalysts. We demonstrate the TAPS-catalyzed carbon dioxide fixation at atmospheric pressure for the coupling reaction with epoxides. Five-membered cyclic carbonates were obtained, including enantio-enriched carbonates. Mechanistic studies revealed the origin of the behavior of TAPS to be the in situ formation of an active species by TAPS addition to epoxides via halohydrin intermediates.
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