Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 931-40-8, is researched, SMILESS is O=C1OCC(CO)O1, Molecular C4H6O4Journal, Article, Dalton Transactions called Synthesis of helical aluminium catalysts for cyclic carbonate formation, Author is Gaona, Miguel A.; de la Cruz-Martinez, Felipe; Fernandez-Baeza, Juan; Sanchez-Barba, Luis F.; Alonso-Moreno, Carlos; Rodriguez, Ana M.; Rodriguez-Dieguez, Antonio; Castro-Osma, Jose A.; Otero, Antonio; Lara-Sanchez, Agustin, the main research direction is cyclic carbonate preparation; epoxide carbon dioxide chem fixation helical aluminum catalyst.HPLC of Formula: 931-40-8.
Helical aluminum complexes [Al2X4(μ-nbptam)] (X = Me, Et; (nbptamH = N-naphthyl-2,2-bis(3,5-dimethylpyrazol-1-yl)thioacetamide)), [Al2X4(μ-fbpam)] (fbpamH = N-fluorenyl-2,2-bis(3,5-dimethylpyrazol-1-yl)acetamide), [Al3X7(μ-nbptam)] and [Al3X7(μ-fbpam)] have been prepared by treatment of scorpionate ligand precursors with two or three equivalent of the corresponding trialkylaluminum derivative AlX3. The structures of these complexes have been determined by spectroscopic methods and the X-ray crystal structure of complex [Al2X4(μ-nbptam)] (X = Me) has also been established. These complexes have been studied as catalysts for the chem. fixation of carbon dioxide into cyclic carbonates I (R = Ph, Me, CH2Cl, CH2OC6H5, etc.) and II (R1R2 = -(CH2)3-, R3 = H; R1 = R2 = Me, R3 = H; R1 = H, R2 = R3 = Me; R1 = H, R2 = R3 = Ph; R1 = H, R2 = Me, R3 = Ph) displaying good catalytic activity. When cis-cyclohexene oxide was used as a substrate, polyether-polycarbonate was obtained in a ratio which is highly dependent on the cocatalyst and the catalyst to cocatalyst ratio used.
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