173007-64-2Relevant academic research and scientific papers
Ultrasound Assisted the Synthesis of 1,3-Dioxolane Derivatives from the Reaction of Epoxides or 1,2-Diols with Various Ketones Using Graphene Oxide Catalyst
Mirza-Aghayan, Maryam,Mohammadi, Marzieh,Ahmadi, Zahra,Boukherroub, Rabah
, p. 2959 - 2969 (2020)
Abstract: The main objective of this study concerns the sonochemical synthesis of 1,3-dioxolane derivatives using graphene oxide catalyst by applying two methods. In the first method, we described the synthesis of 1,3-dioxolane by ring-opening of epoxides in the presence of ketones catalyzed by graphene oxide (GO) under ultrasonic irradiation. In the second sonochemical procedure, we described the synthesis of 1,3-dioxolane derivatives by the reaction of 1,2-diols with ketones using same GO catalyst. Mild reaction conditions, high yields, short reaction times, reusability of catalyst and easy isolation of the products make the developed methods very useful. Graphic Abstract: [Figure not available: see fulltext.]
A mild stereo- and enantiospecific conversion of 2,3-diaryl-substituted oxiranes into 2,2-dimethyl-1,3-dioxolanes by an acetone/amberlyst 15 system
Solladie-Cavallo, Ariette,Choucair, Elias,Balaz, Milan,Lupattelli, Paolo,Bonini, Carlo,Di Blasio, Nadia
, p. 3007 - 3011 (2007/10/03)
Amberlyst 15 is an efficient catalyst for the reaction of aryl-substituted oxiranes with acetone to prepare 2,2-dimethyl-1,3-dioxolanes in high yields. trans-2,3-Diaryloxiranes afford trans-acetonides enantiospecifically at room temperature, and the use of enantiopure 2,3-diaryloxiranes results in no loss of stereochemical integrity in the resulting trans-acetonides. Wiley-VCH Verlag GmbH & Co. KGaA, 2006.
Induction of cholesteric mesophases by simple cyclic derivatives of p,p'-disubstituted 1,2-diphenylethane-1,2-diols: Importance of shape and polarizability effects
Superchi, Stefano,Donnoli, Maria Irene,Proni, Gloria,Spada, Gian Piero,Rosini, Carlo
, p. 4762 - 4767 (2007/10/03)
A systematic study of the cholesteric induction in nematic solvents (MBBA and E7) by some cyclic derivatives of unsubstituted and p,p'- disubstituted-1,2-diphenylethane-1,2-diols shows that the values of the twisting power are significantly dependent on t
A General, Multitechnique Approach to the Stereochemical Characterization of 1,2-Diarylethane-1,2-diols
Rosini, Carlo,Scamuzzi, Simone,Focati, Marco Pisani,Salvadori, Piero
, p. 8289 - 8293 (2007/10/03)
A general method which allows the nonempirical stereochemical characterization of 1,2-diarylethane-1,2-diols, obtained by the Sharpless catalytic dihydroxylation of (E)-ArCR=CHAr' olefins, has been devised.The basis of the method is the transformation into the corresponding ketals with acetone.These derivatives can be resolved on the Daicel Chiralcel OD column, allowing the determination of the ee, while the absolute configuration is assigned by the analysis of their circular dichroism (CD) spectra and by the helicity of the cholesteric phase induced in nematic liquid crystals.
