Organocatalysts for the Synthesis of Cyclic Carbonates under the Conditions of Ambient Temperature and Atmospheric CO2 Pressure

Autor:	Yeongju Seong, Sanghun Lee, Seungyeon Cho, Yoseph Kim, Youngjo Kim
Jazyk:	angličtina
Rok vydání:	2024
Předmět:	organocatalysts ambient conditions cyclic carbonates carbon dioxide epoxides Chemical technology TP1-1185 Chemistry QD1-999
Zdroj:	Catalysts, Vol 14, Iss 1, p 90 (2024)
Druh dokumentu:	article
ISSN:	2073-4344
DOI:	10.3390/catal14010090
Popis:	2–(1H–1,2,4–Triazol–3–yl)phenol (CAT–1) was used as an organocatalyst for the coupling reaction of CO2 and epoxides at an ambient temperature and atmospheric CO2 pressure (1 bar). This compound has a structure in which a hydrogen bond donor, a hydrogen bond acceptor, and another hydrogen bond donor are adjacent in sequence in a molecule. The binary catalytic system of CAT–1/nBu4NI showed TON = 19.2 and TOF = 1.60 h−1 under 1 bar CO2 at room temperature within 12 h using 2–butyloxirane. Surprisingly, the activity of CAT–1, in which phenol and 1H–1,2,4–triazole are chemically linked, showed a much greater synergistic effect than when simply mixing the same amount of phenol and 1H–1,2,4–triazole under the same reaction conditions. In addition, our system showed a broad terminal and internal epoxide substrate scope.
Databáze:	Directory of Open Access Journals
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