56098-45-4

Upstream product

• 23229-37-0 1,3-dimethyl-2-phenylimidazolidine 
• 140-28-3 N,N'-Dibenzylethylenediamine 
• 102950-52-7 1,3-dibenzyl-2-phenyl-hexahydro-pyrimidine 
• 10239-34-6 N,N'-dibenzyl-1,3-diaminopropane 
• 4597-81-3 1,3-dibenzyl-2-phenylimidazolidine 
• 63674-16-8 N,N'-bisbenzylidene-1,3-diaminopropane 
• 191480-61-2 (±)-trans-N,N'-dibenzylcyclohexane-1,2-diamine 
• 22990-77-8 C-piperidin-2-yl-methylamine 
• 100-52-7 benzaldehyde 

Relevant academic research and scientific papers

PIDAZTA: Structurally Constrained Chelators for the Efficient Formation of Stable Gallium-68 Complexes at Physiological pH

Two structurally constrained chelators based on a fused bicyclic scaffold, 4-amino-4-methylperhydro-pyrido[1,2-a][1,4]diazepin-N,N′,N′-triacetic acids [(4R*,10aS*)-PIDAZTA (L1) and (4R*,10aR*)-PIDAZTA (L2)], were designed for the preparation of GaIII

Reversible aminal formation: Controlling the evaporation of bioactive volatiles by dynamic combinatorial/covalent chemistry

Dynamic mixtures generated by reversible aminal formation efficiently prolong the duration of evaporation of bioactive volatile aldehydes. Secondary diamines used for the generation of dynamic mixtures are obtained by treatment of primary diamines with carbonyl compounds and reduction of the diimines with NaBH4. The reversibilities of the reactions were demonstrated by NMR measurements in buffered aqueous solutions. Kinetic rate constants and equilibrium constants for the formation and hydrolysis of aminals were determined. The performance of dynamic mixtures as delivery systems for perfumery ingredients was tested after deposition onto cotton, and the long-lastingness of fragrance evaporation was investigated by dynamic headspace analysis against a reference sample. The simplicity of the concept together with its excellent performance makes this delivery system highly interesting for applied perfumery. Reversible aminal formation might also be successfully applicable to dynamic combinatorial/covalent chemistry for screening of pharmaceutically or catalytically active ligands and receptors. The evaporation of bioactive volatiles that are emitted from flowers to attract insects and that are used as fragrances in our everyday life is limited in time. Dynamic mixtures obtained by reversible aminal formation of suitably designed diamines with volatile aldehydes prolong the perception of these compounds in functional perfumery.

CONTROLLED RELEASE OF ACTIVE ALDEHYDES AND KETONES FROM EQUILIBRATED DYNAMIC MIXTURES

The present invention concerns a dynamic mixture obtained by combining, in the presence of water, at least one diamine derivative, comprising at least one benzylamine moiety, with at least one active aldehyde or ketone. The invention's mixture is capable of releasing in a controlled and prolonged manner said active compound, in particular perfuming ingredients, in the surrounding environment.