Processes for the production of dialquila carbonates, and for the production of carbonate of dimetile, and.Homogeneous catalyst useful for reacting urea and primary alcohols to produce carbonates of dialquila

摘要

"Processes for the production of dialquila carbonates, and for the production of carbonate of dimetile, and.Homogeneous catalyst useful for reacting urea and primary alcohols to produce carbonates of dialquila ".A process for producing dialquila carbonates, such as calcium carbonate dimetile,From the reaction of a primary alcohol with urea in the presence of a new catalyst which is a complex of organoestanho with an electron donor compound, high boiling solvent acting as soundThe bidentados ligands that form adducts 1: 1 bidentados and / or 1: 2 monodentados with R ~ 2 ~ SNx ~ 2 ~ (x = C1, R ', R' coo or R 'cos), R ~ 3 ~ SNx, R ~ 2 ~ St.,PH ~ 3 - N ~ r 'SNx ~ n ~ - N ~ ~ 4 or pH SNx ~ n ~ (where R' = C ~ Q ~ H ~ 2q - 1 ~ n = 0,1ou 2 and q = 2 to 12) and mixtures thereof, such as, materials having the general formula ro [Ch (CH ~ 2 ~ ~ 2 ~) ~ K ~ ch ~ 2 ~] ~ m ~ r,Where each R is independently selected from alkyl metadas, alcarila or araquila C ~ 1 - 12 ~, k = 0, 1, 2 or 3, and M = 1, 2, 3, 4 or 5.