Investigation on cyclic guanidine derivatives. Part III. Synthesis and properties of 2-piperidino- and 2-homopiperidino-tetrahydropyrimidine-4,6-dione derivatives was written by Zimon, Romuald;Cygankiewicz, Andrzej;Gorczyca, Maria. And the article was included in Polish Journal of Pharmacology and Pharmacy in 1976.Recommanded Product: 10203-58-4 This article mentions the following:
Pyrimidinediones I (R = H, Et, allyl, Pr, CHMe2, Bu, CH2CHMe2, pentyl, isopentyl, Ph, n = 1,2; R = Cl, n = 1; R = Me, n = 2) were prepared in 35-62% yield by condensing the amidines II with RCH(CO2Et)2. I (R = H, Ph, n = 1,2) had strong antidepressant activity (no data). In the experiment, the researchers used many compounds, for example, Diethyl isobutylmalonate (cas: 10203-58-4Recommanded Product: 10203-58-4).
Diethyl isobutylmalonate (cas: 10203-58-4) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. Esters contain a carbonyl center, which gives rise to 120° C–C–O and O–C–O angles. Unlike amides, esters are structurally flexible functional groups because rotation about the C–O–C bonds has a low barrier. Their flexibility and low polarity is manifested in their physical properties; they tend to be less rigid (lower melting point) and more volatile (lower boiling point) than the corresponding amides. Recommanded Product: 10203-58-4
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics