62285-15-8Relevant articles and documents
Photopolymerizable Synthons from Glycerol Derivatives
Mhanna, Ali,Sadaka, Faten,Boni, Gilles,Brachais, Claire-Helene,Brachais, Laurent,Couvercelle, Jean-Pierre,Plasseraud, Laurent,Lecamp, Laurence
, p. 337 - 348 (2014)
Photopolymerizable monomers based on monoglycerides were prepared by a convenient two-step procedure. The first one consists of the synthesis of highly pure monoglycerides by an organocatalyzed solvent-free route. This process was carried out by condensation of bio-sourced carboxylic acids (i.e. butyric, decanoic, undecylenic or stearic acids) with glycerol carbonate or glycidol in the presence of a quaternary ammonium salt as a catalyst. The obtained bio-based monoglycerides were modified in the second step by reaction with acryloyl and methacryloyl chloride leading to a series of new diacrylated and dimethacrylated monomers. The structures of the monoglycerides, diacrylated and dimethacrylated monomers were fully characterized by spectroscopic methods. Photopolymerization investigations monitored by infrared spectroscopy were achieved under ultraviolet radiation in the presence of a photoinitiator. The resulting cross-linked materials were analyzed by thermal gravimetric analysis, gel content determination and tests of swelling in water, ethanol and methylene chloride. Data relative to the pendulum hardness of these materials are also included.
Structural Analysis of Partial and Total Esters of Glycerol Undecenoate and Diglycerol Undecenoate
Boussambe, Gildas Nyame Mendendy,Valentin, Romain,Mouloungui, Zphirin
, p. 1567 - 1577 (2015/12/23)
The direct esterification reaction between glycerol and undecylenic acid or between diglycerol and undecylenic acid generates all the possible types of glycerol or diglycerol esters. Purification by silica gel chromatography resulted in the isolation of each of these types of ester in a pure form. The molecular structures of the compounds isolated were characterized and identified by mass spectrometry, 1H NMR, 13C NMR and DEPT-135. We then studied the composition of esters of undecylenic acid formed with glycerol or diglycerol as a function of their reaction conditions, which constitute a highly complex system. We purified undecylenic acid esters from each polyol family to allow the structural identification of each ester of glycerol and each ester of diglycerol with undecylenic acid. We found that the polarity of these non-ionic amphiphilic esters directly affected their affinity for organic and inorganic solvents and that these esters behaved very differently from anionic amphiphilic molecules, such as undecylenic acid.
A Highly Selective Methodology for the Direct Conversion of Acetals to Esters
Chidambaram, N.,Bhat, Shridhar,Chandrasekaran, S.
, p. 5013 - 5015 (2007/10/02)
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