Cationic polymerization behavior of seven-membered cyclic sulfite

Highly efficient SO2 absorption/activation and subsequent utilization by polyethylene glycol-functionalized Lewis basic ionic liquids

“…Five-membered cyclic sulfites, [38][39][40][41][42][43][44] which can serve as monomers for use in ring-opening polymerization reactions as solvents and as electrolyte additives, [45][46][47][48][49][50][51][52][53] were synthesized via insertion of SO 2 into epoxides, catalyzed by Lewis basic ILs derived from DABCO through the activation of SO 2 by the tertiary nitrogen in the cation, forming ammonium sulfate zwitterionic structure, which is smoothly performed in a similar manner as activation and conversion of CO 2 through formation of carbamate salt from CO 2 and tertiary nitrogen in the cation (Scheme 2). 35,54 Notably, the IL i.e.…”

Highly efficient SO2 absorption/activation and subsequent utilization by polyethylene glycol-functionalized Lewis basic ionic liquids

“…Five-membered cyclic sulfites, [38][39][40][41][42][43][44] which can serve as monomers for use in ring-opening polymerization reactions as solvents and as electrolyte additives, [45][46][47][48][49][50][51][52][53] were synthesized via insertion of SO 2 into epoxides, catalyzed by Lewis basic ILs derived from DABCO through the activation of SO 2 by the tertiary nitrogen in the cation, forming ammonium sulfate zwitterionic structure, which is smoothly performed in a similar manner as activation and conversion of CO 2 through formation of carbamate salt from CO 2 and tertiary nitrogen in the cation (Scheme 2). 35,54 Notably, the IL i.e.…”

Highly Efficient SO2Absorption and Its Subsequent Utilization by Weak Base/Polyethylene Glycol Binary System

“…On the other hand, the SO 2 molecule is presumably activated upon its capture, and thus the absorbed SO 2 molecule could be directly used as a feedstock. As a result, the reaction of the absorbed SO 2 with epoxides performed smoothly under mild conditions without utilization of any solvents or additives to afford the 5-membered cyclic sulfites (Scheme ), − which have been widely used as monomers for use in ring-opening polymerization reactions, solvents, and electrolyte additives. − From the viewpoint of green chemistry and economic perspectives, synthesis of cyclic sulfites through the cycloaddition procedure utilizing the absorbed SO 2 as a feedstock could be more attractive in comparison with the general procedure through the stoichiometric reaction of 1,2-diol and thionyl chloride in the presence of an organic base (e.g., triethylamine or pyridine), which generates stoichiometric amounts of salts as waste and chlorine-containing impurities. − In this way, SO 2 in flue gas was eventually converted to valuable chemicals and the absorbents were recycled for the next run.…”

Highly efficient SO2 absorption/activation and subsequent utilization by polyethylene glycol-functionalized Lewis basic ionic liquids

“…Five-membered cyclic sulfites, [38][39][40][41][42][43][44] which can serve as monomers for use in ring-opening polymerization reactions as solvents and as electrolyte additives, [45][46][47][48][49][50][51][52][53] were synthesized via insertion of SO 2 into epoxides, catalyzed by Lewis basic ILs derived from DABCO through the activation of SO 2 by the tertiary nitrogen in the cation, forming ammonium sulfate zwitterionic structure, which is smoothly performed in a similar manner as activation and conversion of CO 2 through formation of carbamate salt from CO 2 and tertiary nitrogen in the cation (Scheme 2). 35,54 Notably, the IL i.e.…”

Highly Efficient SO2Absorption and Its Subsequent Utilization by Weak Base/Polyethylene Glycol Binary System

“…On the other hand, the SO 2 molecule is presumably activated upon its capture, and thus the absorbed SO 2 molecule could be directly used as a feedstock. As a result, the reaction of the absorbed SO 2 with epoxides performed smoothly under mild conditions without utilization of any solvents or additives to afford the 5-membered cyclic sulfites (Scheme ), − which have been widely used as monomers for use in ring-opening polymerization reactions, solvents, and electrolyte additives. − From the viewpoint of green chemistry and economic perspectives, synthesis of cyclic sulfites through the cycloaddition procedure utilizing the absorbed SO 2 as a feedstock could be more attractive in comparison with the general procedure through the stoichiometric reaction of 1,2-diol and thionyl chloride in the presence of an organic base (e.g., triethylamine or pyridine), which generates stoichiometric amounts of salts as waste and chlorine-containing impurities. − In this way, SO 2 in flue gas was eventually converted to valuable chemicals and the absorbents were recycled for the next run.…”

Highly efficient SO2 absorption/activation and subsequent utilization by polyethylene glycol-functionalized Lewis basic ionic liquids

“…Five-membered cyclic sulfites, [38][39][40][41][42][43][44] which can serve as monomers for use in ring-opening polymerization reactions as solvents and as electrolyte additives, [45][46][47][48][49][50][51][52][53] were synthesized via insertion of SO 2 into epoxides, catalyzed by Lewis basic ILs derived from DABCO through the activation of SO 2 by the tertiary nitrogen in the cation, forming ammonium sulfate zwitterionic structure, which is smoothly performed in a similar manner as activation and conversion of CO 2 through formation of carbamate salt from CO 2 and tertiary nitrogen in the cation (Scheme 2). 35,54 Notably, the IL i.e.…”

Highly Efficient SO2Absorption and Its Subsequent Utilization by Weak Base/Polyethylene Glycol Binary System

“…On the other hand, the SO 2 molecule is presumably activated upon its capture, and thus the absorbed SO 2 molecule could be directly used as a feedstock. As a result, the reaction of the absorbed SO 2 with epoxides performed smoothly under mild conditions without utilization of any solvents or additives to afford the 5-membered cyclic sulfites (Scheme ), − which have been widely used as monomers for use in ring-opening polymerization reactions, solvents, and electrolyte additives. − From the viewpoint of green chemistry and economic perspectives, synthesis of cyclic sulfites through the cycloaddition procedure utilizing the absorbed SO 2 as a feedstock could be more attractive in comparison with the general procedure through the stoichiometric reaction of 1,2-diol and thionyl chloride in the presence of an organic base (e.g., triethylamine or pyridine), which generates stoichiometric amounts of salts as waste and chlorine-containing impurities. − In this way, SO 2 in flue gas was eventually converted to valuable chemicals and the absorbents were recycled for the next run.…”