Carbonate organic cyclic

Chapter 12 - Spatial-energy criterion of structure stabilization was obtained. The computation results for a hundred binary systems correspond to the experimental data. The basic regularity of organic cyclic compound formation is given and its application for carbon nanostructures is shown. 

A variety of organic halides can be used, including methyl and 1 ° alkyl halides, as well as vinyl and aryl halides that contain X bonded to an sp hybridized carbon. Some cyclic 2°... 

Najer H, Chabrier P, Giudicelli R. Study of organic cyclic carbonates and their derivatives [in French]. Bull Soc Chim Fr 1954 1142-1148. 

Ai3-18365 Carbonic acid, cyclic ethylene ester CCRIS 293 Cyclic ethylene carbonate Dioxolone-2 EINECS 202-510-0 Ethylene carbonate Ethylene carbonic acid Ethylene glycol carbonate Ethylene glycol, cyclic carbonate Ethylenester kyseiiny uhlicite Glycol carbonate HSDB 6803 NSC 11801 Texacat EC. Solvent for organic and Inorganic material ERA Rule 66 exempt also used as reactant and plasticizer in fibers and textiles, plastics and resins, aromatic hydrocarbon extraction, electrolytes, hydraulic brake fluids. Plates mp = 36.4" bp = 248° = 1,3214 freely soluble in H2O,... 

A-Heterocyclic carbenes (NHCs), used as organocatalysts, have received great interest due to their unique reactivity and selectivity observed in many different types of organic reactions (for selected recent reviews see [250-261]. More recently, NHC-mediated reactions have also been employed for polymer synthesis ([262-264] for selected reviews see [20, 265-267]), especially in the ROP of heterocyclic monomers, such as lactides [268-272], lactones [273-276], epoxides [277-279], cyclic carbonates [280], cyclic siloxanes [281, 282], and A-carboxyl-anhydrides [283, 284]. NHC-mediated step-growth polymerization has also been reported [285-287]. 

Carbon dioxide is a thermodynamically very stable molecule because the carbon is in the highly oxidized state and requires reactive compoimds and effective catalysts for its activation. However, due to the electron deficiency of the carbonyl carbon, carbon dioxide has a strong affinity toward nucleophiles and electron-donating reagents [9]. One class of the important chemical products that can be synthesized from CO is the organic cyclic carbonates by coupling carbon dioxide and epoxides as nucleophiles. Organic cyclic carbonates are valuable chemicals that can be used as electrolyte precursors for the pharmaceutical and fine chemical intermediates. 

Organic cyclic carbonates are a class of compounds with a carbonyl flanked by two alkoxy/aryloxy groups. The most stable form is five-membered cyclic (l,3-dioxolan-2-ones) of the following general structure ... 

Figure 8.1 General reactivity of organic cyclic carbonates.

Competitive adsorption on active carbon of two organic substances dissolved in water is discussed in two papers by Fritz, Merk, and Schliinder. Experiments were made on aqueous solutions of phenol and p-nitrophenol, and interpreted using the ideal adsorbed solution theory of Radke and Prausnitz. A review in Japanese of the adsorption of multiple component aqueous solutions by activated carbon is presented by Takeuchi. The stability of the sorption properties of active carbons under cyclic operating conditions is discussed by Chubarova et al. ... 

Glaeske, K. W., West, F. G. (1999). Chirality transfer from carbon to nitrogen to carbon via cyclic ammonium ylides. Organic Letters, 1, 31-33. 

C.J. Whiteoak, A.H. Henseler, C. Ayats, A.W. Kleij, M.A. Peric s, Conversion of oxiranes and CO2 to organic cyclic carbonates using a recyclable, bifunctional polystyrene-supported organocatalyst, Green Chem. 16 (2014) 1552-1559. 

Organic carbonates and fman derivatives are specialty oxygenated solvents. Ethylene carbonate and propylene carbonate are cyclic esters with good solvency, veiy slow evaporation and very low odor. Tetrahydrofuran, fiufiuyl alcohol and tetrahydrofurfiuyl alcohol are cyclic ethers with... 

Fluorine-substituted carbonates have lower melting points than unsubstituted carbonates, and they have improved oxidation stability, which favors formation of a dense passivation SEl film on carbon negative electrode material. Some linear fluorine-containing carbonates are methyl 2,2,2-tri-fluoroethyl carbonate, ethyl 2,2,2-trifluoroethyl carbonate, propyl 2,2,2-tri-fluoroethyl carbonate, methyl 2,2,2-2, 2, 2 -hexafluoroisopropyl carbonate, ethyl 2,2,2-2, 2, 2 -hexafluoroisopropyl carbonate, and di-2,2,2-trifluoroethyl carbonate. Some cyclic fluorine-containing carbonates include fluoro-methyl ethylene carbonate (CH2F-EC), difluoromethyl ethylene carbonate (CHF2-EC), and trifluoromethyl ethylene carbonate (CF3-EC). They are miscible with EC, PC, and other organic solvents. The fluorinated cyclic... 

Synonyms Carbonic add, cyclic propylene ester Carbonic acid, 1,2-prepylene glycol ester 1,3-Carbonyl dioxypropane Cydic methylethylene carbonate Cyclic propylene carbonate Cyclic 1,2-propylene carbonate 1,3Dioxolan-2-one, 4-methyl Dipropylene carbonate 4-Methyl-1,3-dioxolan-2-one 1-Methyl ethylene carbonate 1,2-Propanediol carbonate 1,2-Propanediol cyclic carbonate 1,2-Pro-panediyl carbonate 1,2-Propylene carbonate Propylene glycol cyclic carbonate Classification Organic compd. carbonic add ester Empiricai C4H5O3... 

Open-chain 1,5-polyenes (e.g. squalene) and some oxygenated derivatives are the biochemical precursors of cyclic terpenoids (e.g. steroids, carotenoids). The enzymic cyclization of squalene 2,3-oxide, which has one chiral carbon atom, to produce lanosterol introduces seven chiral centres in one totally stereoselective reaction. As a result, organic chemists have tried to ascertain, whether squalene or related olefinic systems could be induced to undergo similar stereoselective cyclizations in the absence of enzymes (W.S. Johnson, 1968, 1976). 

HETCOR (Section 13 19) A 2D NMR technique that correlates the H chemical shift of a proton to the chemical shift of the carbon to which it is attached HETCOR stands for heteronuclear chemical shift correlation Heteroatom (Section 1 7) An atom in an organic molecule that IS neither carbon nor hydrogen Heterocyclic compound (Section 3 15) Cyclic compound in which one or more of the atoms in the nng are elements other than carbon Heterocyclic compounds may or may not be aromatic... 

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