Organocatalytic Transformation of Carbon Dioxide

Abstract

Catalytic transformation of CO 2 into the value-added organic compounds is a very important and hot research topic in organic synthetic chemistry and green chemistry from the viewpoint of developing CO 2 as C resource. Organocatalytic reactions employing metal-free organic molecules as catalysts have received unprecedented attention in recent years, with the significant advantages of the catalysts being usually inexpensive and stable, and the reactions can be performed under air. This chapter summarizes and gives an overview of the recent advances in the organocatalytic transformation of CO 2 into cyclic carbonates, 2-oxazolidinones, carboxylic derivatives, as well as the synthesis of CO 2-adducts and their application as CO 2 carriers.

Enantioselective Incorporation of CO2: Status and Potential

“…A variety of comprehensive reviews on catalytic synthesis of organic molecules from CO2 have emerged in recent years, including metalbased and organic catalysis. 4,5,6,11,18,19,20,21,22,23,24,25,26,27,28 There are two catalytic approaches that have found widespread use for activation of the rather inert CO2 molecule (Scheme 1); both approaches involve incorporation of the entire CO2 molecule, which is our main focus here. In the first approach (Scheme 1a), C-CO2 bonds are primarily formed through insertion of CO2 into reactive metal-carbon bonds; in these reactions CO2 acts as an electrophile.…”

“…However, in order to be feasible, bond formation reactions should be catalytic. A variety of comprehensive reviews on the catalytic synthesis of organic molecules from CO 2 have emerged in recent years, including metal-based and organic catalysis. − ,,− There are two catalytic approaches that have found widespread use for activation of the rather inert CO 2 molecule (Scheme ). Both approaches involve incorporation of the entire CO 2 molecule, which is our main focus here.…”

Review on the Chemical Conversion of Carbon Dioxide with Aziridineby Using Catalyts: Environmentally Freiendly Accesses to Cyclic Carbamates

“…The system used to be tolerated by means of a quantity of N-alkyl aziridines bearing various useful corporations in alkyl terminal position, however N-to sylaziridines did not undergo the coupling reaction probably due to the much less nucleophilic exercise of the nitrogen. In addition, the formation of the DBN-CO 2 was proposed to be the intermediate of the catalytic cycle (Scheme 6) [22].…”

“…Figure 6. Proposed mechanism in the synthesis of 2 -oxazolidinones from CO2 and aziridinescatalyzed by DBN[22].…”