631-66-3Relevant academic research and scientific papers
Unexpected Reaction of Oximinoacetoacetate with Amines: A Novel Synthesis of Carbamates
Elghamry, Ibrahim
experimental part, p. 3010 - 3015 (2009/12/01)
The synthesis of alkyl carbamates by a solvent-free reaction of oximinoacetoacetate and amine at 130C is reported. A preliminary mechanism to this unexpected reaction is also given.
Oxidation of aminodinitrotoluenes with ozone: Products and pathways
Spanggord, Ronald J.,Yao, C. David,Mill, Theodore
, p. 497 - 504 (2007/10/03)
An investigation of the products from the reaction of ozone with aminodinitrotoluenes (ADNTs) provides information about the oxidation pathway. Studies conducted at low conversions of 2- and 4-ADNT show 2:1 ozone/ADNT stoichiometries, prompt formation of glyoxylic and pyruvic acids, and NO2- and NO3- (NOx) ions. Reaction schemes to account for these results involve a 1,3-dipolar cycloaddition of ozone to selected double bonds of the aromatic ring, leading to ring cleavage. 15N-Labeling experiments indicate that the amino function is not involved in the initial ozone oxidation and eventually is incorporated into pyruvamide (2-ADNT) and oxamic acid (4-ADNT) before being oxidized to nitrate.
Pyridoxal-catalyzed release of nucleotides
Pochet, Sylvie,Beaussire, Jean-Jacques,Dugue, Laurence,Marliere, Philippe
, p. 1019 - 1020 (2007/10/03)
The synthesis of phosphoric esters linking the 5' alcohol of thymidine to the alcohol moiety of L-serine derivatives is reported, together with the pyridoxal-catalyzed β-elimination reaction releasing thymidylate from such compounds. The process was extended to the release of thymidine di- and tri- phosphate.
Synthesis of α,α-Disubstituted α-Amino Acid Amides by Phase-Transfer Catalyzed Alkylation
Kaptein, Bernard,Boesten, Wilhelmus H. J.,Broxterman, Quirinus B.,Schoemaker, Hans E.,Kamphuis, Johan
, p. 6007 - 6010 (2007/10/02)
α,α-Disubstituted α-amino acid amides were prepared in 17-88 percent chemical yield by the phase-transfer catalyzed alkylation of N-benzylidene α-H amino acid amides, followed by weak acidic hydrolysis of the Schiff bases.
5-Cyano-prostacyclin derivatives
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, (2008/06/13)
Stabilized prostacyclins having a wide range of pharmacological activity and long duration of such activity, have the formula STR1 wherein R1 is (a) OR3, wherein R3 is hydrogen, alkyl, cycloalkyl, aryl or a heterocyclic residue; or (b) NHR4 wherein R4 is an acid residue; B is straight-chain or branched alkylene of 2-10 carbon atoms; A is --CH2 --CH2 --, cis--CH=CH--, trans--CH=CH-- or --C C--, W is free or functionally modified hydroxymethylene or free or functionally modified STR2 wherein the OH-group can be in the α- or β-position; D and E together are a direct bond; or D is straight-chain or branched alkylene of 1-5 carbon atoms; and E is oxygen or sulfur or a direct bond, R2 is alkyl, cycloalkyl, optionally substituted aryl or a heterocyclic group; and R5 is free or functionally modified hydroxy; and when R3 is hydrogen, the salts thereof with physiologically compatible bases.
