23918-30-1Relevant academic research and scientific papers
METHOD FOR PROCESSING COMPOSITIONS CONTAINING 1,1,2,2-TETRAMETHOXYETHANE AND GLYOXAL DIMETHYL ACETAL
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Page/Page column 17-23, chart 1/2; 2/2, (2008/06/13)
Disclosed is a method for processing an aqueous composition containing 1,1,2,2-tetramethoxyethane, glyoxal dimethyl acetal, and methanol by means of distillation. Said method is characterized in that the composition is processed in a partition column so as to form low-boiling, medium-boiling, and high-boiling fractions. A partition is disposed in the longitudinal direction of the partition column such that a common top column area, a common bottom column area, a feeding zone comprising a rectification section and a stripping section, and a removing zone encompassing a stripping section and a rectification section are created. The aqueous composition is delivered to the central area of the feeding zone.
STRUCTURE AND CONFORMATION OF HETEROCYCLES. 13. CONFORMATIONAL ANALYSIS OF 2,3-DI(R)OXY-1,4-DIOXANES: ANOMERIC AND GAUCHE EFFECTS
Fuchs, Benzion,Ellencweig, Aviyakar,Burkert, Ulrich
, p. 2011 - 2022 (2007/10/02)
A series of trans- and cis-2,3-di(R)oxy-1,4-dioxanes (R = Me,Ph,Ac) and some 2,5-disubstituted analogs were prepared and analysed by various NMR techniques.The trans isomers occur in more than 96percent as diaxial conformers.Molecular mechanics calculations largely confirm these findings, which are interpreted in terms of combined anomeric and gauche effects.
ELECTROCHEMICAL OXIDATION OF DIOXENE AND CHLORODIOXENE IN ALCOHOL SOLUTIONS
Krasavtsev, I. I.
, p. 1775 - 1777 (2007/10/02)
2,3-Dialkoxy-1,4-dioxanes and 2-chloro-2,3-dialkoxy-1,4-dioxanes are formed during the anodic oxidation of dioxene and chlorodioxene respectively in the presence of various alcohols.The reaction of the products with sodium methoxide gave ortho esters of a new type.During hydrolysis of 2-chloro-2,3-dimethoxydioxane glyoxylic acid or its ester are obtained depending on the conditions.
