Preparation of functionalized compounds cyclocarbonate

Process for preparing compounds functionalized cyclocarbonate of general formula (I) ** ** Formula wherein R1 and R2 at each occurrence is independently selected from hydrogen, methyl and ethyl, R in each occurrence is independently 2 to 50, m in each occurrence is independently 0 or 1, and n is> = 3, subject to the proviso that the sum of all values ​​of R in the molecule is 5 to 100, by reacting a chloroformate of formula (II) ** ** formula with a trifunctional amine of general formula (III) ** ** formula wherein the reaction is carried out in a system of two aqueous / organic phase in the presence of an auxiliary base and a phase transfer catalyst.