One-pot synthesis of 5-alkylthio-3H-1,2-dithiole-3-thiones: advantages and scopes was written by Aimar, Mario L.;De Rossi, Rita H.. And the article was included in Synthesis in 2000.Application of 1190-39-2 This article mentions the following:
The reaction of dialkyl malonate esters, ROCOCHR1CO2R [R = H, Me, Et, Pr, i-Pr, Ph, Bu, hexyl, octyl, decyl, benzyl, 2-ethoxyethyl, R1 = H; R = Et, R1 = Me, benzyl, Ph, Cl, OMe, Br, Br2, NO2], with P2S5/S8 in boiling xylene in the presence of 2-mercaptobenzothiazole/ZnO as catalyst produced the corresponding 5-alkylthio-3H-1,2-dithiole-3-thiones I as major identifiable product. Moderate yields were obtained with malonate esters of primary alcs. The reaction failed with malonate esters of secondary alcs. Regarding the substituent in position two, dialkyl malonates with groups such as CH3, Ph, CH2Ph, OCH3 and Cl afford the corresponding 4-substituted derivatives whereas with Br and NO2 did not give the expected products. Some mechanistic evidences were described. In the experiment, the researchers used many compounds, for example, malonic acid dibutyl ester (cas: 1190-39-2Application of 1190-39-2).
malonic acid dibutyl ester (cas: 1190-39-2) belongs to esters. Esters typically have a pleasant smell; those of low molecular weight are commonly used as fragrances and are found in essential oils and pheromones. Liquid esters of low volatility serve as softening agents for resins and plastics. Esters also include many industrially important polymers. Polymethyl methacrylate is a glass substitute sold under the names Lucite and Plexiglas; polyethylene terephthalate is used as a film (Mylar) and as textile fibres sold as Terylene, Fortrel, and Dacron.Application of 1190-39-2
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics