Topic
Hydrazone
About: Hydrazone is a research topic. Over the lifetime, 4853 publications have been published within this topic receiving 65160 citations. The topic is also known as: hydrazone.
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TL;DR: Combining the rheology data with dynamic headspace analysis of fragrance evaporation suggested that reversible hydrazone formation of some carbonyl compounds influences the release of volatiles, whereas the absolute stability of the gel seemed to have no influence on theEvaporation rates.
Abstract: In the presence of alkali metal cations, guanosine-5′-hydrazide (1) forms stable supramolecular hydrogels by selective self-assembly into a G-quartet structure. Besides being physically trapped inside the gel structure, biologically active aldehydes or ketones can also reversibly react with the free hydrazide functions at the periphery of the G-quartet to form acylhydrazones. This particularity makes the hydrogels interesting as delivery systems for the slow release of bioactive carbonyl derivatives. Hydrogels formed from 1 were found to be significantly more stable than those obtained from guanosine. Both physical inclusion of bioactive volatiles and reversible hydrazone formation could be demonstrated by indirect methods. Gel stabilities were measured by oscillating disk rheology measurements, which showed that thermodynamic equilibration of the gel is slow and requires several cooling and heating cycles. Furthermore, combining the rheology data with dynamic headspace analysis of fragrance evaporation suggested that reversible hydrazone formation of some carbonyl compounds influences the release of volatiles, whereas the absolute stability of the gel seemed to have no influence on the evaporation rates.
44 citations
TL;DR: Syntheses des s-tetrazines du titre a partir de methylhydrazones d'acetone ou cyclanones et de [N-aryl chloro] formohydrazonoyl formiates de methyle ou de chlorures de N-aryl benzohydramonoyle (precurseurs de nitrilimines) as discussed by the authors.
Abstract: Syntheses des s-tetrazines du titre a partir de methylhydrazones d'acetone ou cyclanones et de [N-aryl chloro] formohydrazonoyl formiates de methyle ou de chlorures de N-aryl benzohydrazonoyle (precurseurs de nitrilimines)
44 citations
TL;DR: In this paper, five diorganotin(IV) complexes of benzoylformic acid 3-hydroxy-2-naphthoyl hydrazone, [R2SnLY]2 (L.= 3-HO-C10H6CON2C(C6H5)CO2) with Y = H2O, R= CH3 (1), Y = EtOH, R = n-Bu (2), R = Ph 3 (3), R= O-Cl-Bz (4), Y= Et
44 citations
TL;DR: The first-order reaction of the degradation with anhydrous hydrazine is completed at 60° within 1.5 h for deoxycytidylic acid and within 4 h for thymidylic acids as mentioned in this paper.
44 citations
TL;DR: In vitro, the specific interaction of the synthetic LAMP-peptidoliposomes with the cytoplasmic adaptor protein AP-3 is demonstrated, a result that contributes to the understanding of protein sorting in cells and indicates the usefulness of such peptidolipsomes, easily prepared by hydrazone chemoselective ligation, as a tool for biological investigation.
44 citations