CO₂ activation through C–N, C–O and C–C bond formation

Abstract

CO2 fixation reactions have been explored using different organic substrates upon activation with a superbase.

CS2/CO2Utilization Using Mukaiyama Reagent as a (Thio)carbonylating Promoter: A Proof-of-Concept Study

“…As an augmentation to our research efforts on CO 2 capture using biorenewables, 67 − 72 biomaterials, 73 , 74 and small organic molecules/oligomers, 75 , 76 as well as CO 2 utilization catalyzed by poly(ionic liquid)s, 77 organocatalysts, 78 and metal oxide/inorganic complexes, 79 − 81 we provide a platform for the synthesis of olidines and olanes, including imidazolidin-2-one, oxazolidin-2-one, 1,3-dioxolan-2-one, 1,3-dithiolan-2-one, and their sulfur counterparts upon reacting CO 2 (CS 2 ) with ethylenediamine ( en ), monoethanolamine (MEA), ethylene glycol (EG), and ethane-1,2-dithiol (EDT), respectively, in the presence of CMPI as shown in Scheme 2 .…”

In situ activation of green sorbents for CO2 capture upon end group backbiting

“…31 Furthermore, they can also be synthesized using green carbonylating agents such as propylene carbonate, as innovated by our research group, 32 CO 2 , 33,34 or scCO 2 . 35 Our recent findings on bio-renewables/materials, [36][37][38][39] fine chemicals, 22,[40][41][42][43][44] and natural/synthetic polymeric materials [45][46][47][48][49][50] serving as scaffolds for CO 2 sequestration/utilization unveil a newly developed strategy that can develop mechanistic approaches for CO 2 capture. 51,52 Several research groups [53][54][55][56] have studied the thermolysis of urethane with its derivative, illustrated by three separate individual steps.…”

Direct Evidence for Reaction between Cellulose and CO2 from Nuclear Magnetic Resonance

“…15 The reaction with CO 2 could additionally have much wider bearingfor use as a renewable carbon capturing system. Cyclodextrin in DMSO in the presence of KOH, 18 and as a metal−organic framework together with RbOH, 19 has previously been suggested for this purpose, and so has small-molecule alcohols 20,21 and, interestingly, the β-glucans chitin and chitosan. 22−24 In some of the works on carbohydrates, direct detection of the carbonate species by 13 C NMR is reported, 18,19,22,24 which suggests that the same should be possible for cellulose carbonate.…”

“…The reaction with CO 2 could additionally have much wider bearingfor use as a renewable carbon capturing system. Cyclodextrin in DMSO in the presence of KOH, and as a metal–organic framework together with RbOH, has previously been suggested for this purpose, and so has small-molecule alcohols , and, interestingly, the β-glucans chitin and chitosan. − In some of the works on carbohydrates, direct detection of the carbonate species by 13 C NMR is reported, ,,, which suggests that the same should be possible for cellulose carbonate. Interestingly, recent results suggest that the formation of organic carbonates play a role in the CO 2 -capturing ability of alkanolamines, in addition to that of the carbamates formed by the reaction between the amine group and CO 2 . , …”