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6,705 Newest Publications about the topic estersrss
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30-Nov-2007 | B. A. Rozenberg, Polymer Science Series C, 2007
The review covers the experimental and theoretical studies devoted to the anionic polymerization of esters and amides of acrylic and methacrylic acids containing groups with mobile hydrogen atoms. Within the framework of ideas concerning the kinetics and mechanism of the processes of interest and ...
19-Feb-2004 | Lubomír Floch, Juraj Kubán, Andrea Gogová, Peter Zálupsky, Tibor Jakubík, Nada Prónayová, Molecules Online, 2004
Triton B catalyzed Michael addition of nitromethane on esters of !,#-unsaturated acids 1 has been studied. The course and regioselectivity of the reaction is discussed in the view of structure of products 2a-g, 3a-g, 4g, f, 5g, f, assessed by GC/MS, NMR and IR spectroscopy and by MOPAC ...
19-Feb-2004 | N.M. Fawzy, A.M. Shalaby, M.E.A. Zaki, Molecules Online, 2004
. Hydrolysis of oxazolone derivatives (2b) yielded a-khellinoyl(amino)-cinnamic acid (3) as a good precursor to react with ethyl esters of glycine, l-methionine, and glycylglycine affording 4, 5, and 4,5 respectively with minor product 7. Hydrolysis of oxazolone derivatives (2b) afforded ...
19-Feb-2004 | D. Enders, U. Baus, P. Müller, K.C. Nicolaou, B. Jandeleit, Molecules Online, 2004
. Based on aldehydes 1a-f or ketone 1g, 3-substituted 4-oxo esters 6a-g were synthesized in three steps in moderate to good overall yield (12-50%) and in excellent enantiomeric excesses (ee > 90® 95%) by an Umpolung-strategy employing the SAMP-/RAMP-hydrazone method. The key step in the ...
19-Feb-2004 | Colin S. French, David M. Smith, Molecules Online, 2004
The N-(o-nitrophenyl) derivatives of glycine and sarcosine esters 1a and 1b are cyclised in basic media to benzimidazole N-oxides 2 and 1-hydroxyquinoxaline-2,3-diones 3 respectively. Since the formation of the hydroxyquinoxalinedione is anomalous given the previously accepted mechanism for ...