A process for the production of Esters dialquilicos acid - 2 - 1.3 - ditiol - ylidene malonic

摘要

Process for producing acid Esters dialquilicos 1.3 - ditiol - ylidene - pralonico. Is to react with a dialquiloxicarbonilcetendimercapturo 1.1 - dihalogencetileno. The reaction takes place in a mixture of water and a Polar Solvent, such as dimethylsulfoxide.The dialquiloxicarnonilcetendimercapturo is generated in situ by reacting a dialkyl Ester of malonic acid with carbon disulfide in the presence of a base. The Ester of malonic acid, the dialquilico Diisopropyl malonate. Equimolecular reaction is, but can be used over any one of the Reagents.The reaction temperature is between 10 C and the boiling temperature of the Solvent used.