abstract |
The present invention provides a catalyst system for producing cyclic carbonates comprising:a pre-catalyst, which is BiCl3 having amounts in the range from 5 to 10% by weight of silica support;a compound having formula (I)wherein:Y is selected from bromide (Br−) or iodide (I−);R1, R2, and R3 are methyl group or R1, R2, and R3 are taken together to form a heteroaryl ring having formula (II)anda silica (SiO2) support. |