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Iron(III) N , N ‐Dialkylcarbamate‐Catalyzed Formation of Cyclic Carbonates from CO 2 and Epoxides under Ambient Conditions by Dynamic CO 2 Trapping as Carbamato Ligands
Author(s) -
Bresciani Giulio,
Bortoluzzi Marco,
Marchetti Fabio,
Pampaloni Guido
Publication year - 2018
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201801065
Subject(s) - catalysis , chemistry , propylene carbonate , yield (engineering) , carbon dioxide , epoxide , solvent , carbonate , ligand (biochemistry) , selectivity , reaction mechanism , inorganic chemistry , organic chemistry , materials science , electrochemistry , biochemistry , receptor , electrode , metallurgy
Easily available and inexpensive Fe III carbamates were employed in the solvent‐free synthesis of a series of cyclic carbonates from epoxides and CO 2 at room temperature and atmospheric pressure, in the presence of a cocatalyst. Different experimental conditions (type and concentration of catalyst and cocatalyst, as well as reaction time) were investigated: Fe(O 2 CNEt 2 ) 3 and NBu 4 Br acted as the best catalyst/cocatalyst combination, allowing the formation of propylene carbonate and 1,2‐butylene carbonate with quantitative yield and selectivity in 24 h. According to NMR and DFT studies, the reaction proceeds with the dynamic trapping of carbon dioxide as a carbamato ligand.