615-83-8Relevant academic research and scientific papers
Process for preparing (E)-2-propyl-2-pentenoic acid and intermediate compounds
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, (2008/06/13)
Composition consisting of a mixture of (E) and (Z) isomers of esters of general formula: STR1 in which R represents a C1 -C4 alkyl radical, containing at least 85% of (E) isomer. A process for preparing such a composition. The use of such a composition for preparing (E)-2-propyl-2-pentenoic acid of formula: STR2 and also its pharmaceutically acceptable salts.
SOLVOLYSIS OF 1-CHLORO-1-ALKENYL PHENYL SULFIDES. SYNTHESIS OF α-BROMO PHENYL THIOCARBOXYLIC ESTERS, α-BROMO ALKYL CARBOXYLIC ESTERS AND α-PHENYLTHIO METHYL CARBOXYLIC ESTERS
Fortes, C. C.,Chaves, M. H.
, p. 751 - 762 (2007/10/02)
1-Chloro-1-alkenyl phenyl sulfides treated with bromine followed by hydrolysis or methanolysis give α-bromo phenyl thiocarboxylic esters and α-phenylthio methyl carboxylic esters.Direct oxidative solvolysis with bromine and alcohol give α-bromo alkyl carboxylic esters.
Unnatural nucleosides and nucleotides. III. Preparation of 2-14C and 4-14C labelled 5-alkyluracils and 5-alkyl-2'-deoxyuridines
Szabolcs,Kruppa,Sagi,Otvos
, p. 713 - 726 (2007/10/08)
2-14C Labelled 5-alkyluracils were prepared by condensation of the diethylacetals of α-formyl-carbonic acid esters with 14C-thiourea. Compounds labelled at 4-C were synthesized by condensation of the labelled carboxylic acid derivatives with thiourea. β-Anomers of 5-alkyl-2'-deoxyuridines were obtained in a fairly good radiochemical yield. Alkyl substituents ranged from methyl to tetradecyl, isopropyl and tert-butyl.
Alkyl alkanoate derivatives of substituted piperazine-diones and polymer compositions stabilized thereby
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, (2008/06/13)
Alkyl alkanoate derivatives of substituted piperazinediones are stabilizers for synthetic polymeric materials normally subject to deterioration caused by ultraviolet light. The compounds may be formed by reacting a substituted piperazinedione with an acrylate or a crotonate, or reacting the alkali or alkaline earth salt of a substituted piperazine dione with a haloalkanoate. Polymeric compositions containing these stabilizers may also contain a hindered phenolic compound. A typical embodiment is n-octadecyl-β-(15{7,15-diazadispiro[5,1,5,3]hexadecane-14,16-dione}propionate.
