10316-54-8Relevant academic research and scientific papers
Biocatalysis in the chiral recognition of meso-diamides - An efficient route from cyclic olefinic hydrocarbons to optically pure diamino-polyols
Grabowski, Stefan,Armbruster, Joachim,Prinzbach, Horst
, p. 5485 - 5488 (2007/10/03)
meso-Diamino-di(tri,tetr)ols 1-8 were synthesized starting from cheap carbocyclic olefins and cis-diepoxy derivatives. Enantioselective hydrolysis of the corresponding bis(phenylacet)amides with penicillin amidase from E. coli (EC 3.5.1.11) was effected in good yields (73-90%) and with high optical purities (ee 91 - >97).
Synthetic studies on 4,5-dihydro-3H-1,2,4-triazole-3,5-diones bearing fluorogenic residues at N-4
Read, Gordon,Richardson, Nigel R.
, p. 167 - 174 (2007/10/03)
A number of fluorescent 4,5-dihydro-3H-1,2,4-triazole-3,5-diones have been made. Intra-inter-electrophilic substitution by the triazoledione moiety on the activated naphthalene ring of 4-[6-(5-dimethylamino-1-naphthylsulfonamido)hexyl]-4,5-dihydro-3H-1,2,4- triazole-3,5-dione 4a3 leads to rapid decomposition. The dienophilicity of the triazoledione moiety in 4-pyren-1-yl-4,5-dihydro-3H-1,2,4-triazole-3,5-dione 4d is dramatically lowered by steric shielding. Insertion of a three-carbon spacer unit into the latter compound, to give the 3-pyren-1-ylpropyl analogue 4e, affords a valuable fluorogenic reagent for the analysis of trace levels of 1,3-dienes. Powdered barium manganate is shown to be an excellent solid-phase oxidant for conversion of urazoles into 1,2,4-triazole-3,5-diones.
Deazetation of a Bicyclic Azo Compound: Resolution of a Stereochemical Ambiguity and Conformational Analysis of a Biradical
Samuel, Christopher J.
, p. 1259 - 1265 (2007/10/02)
Development of a new approach has permitted a fuller analysis of the stereochemistry of deazetation of the stereospecifically deuteriated azo compound (1d) than could be achieved previously, in that it has proved possible to analyse 2H2>octa-1,7-diene for E,E-, E,Z,-and Z,Z-content.This has given results for the thermal and photochemical reactions that can be rationalised in terms of partial conformational equilibration of the biradical.
