METHOD OF PRODUCING ISOPRENE Russian patent published in 2012 - IPC C07C11/18 C07C2/86 B01J23/20 B01J21/06 B01J27/195 B01J27/18 

FIELD: chemistry.

SUBSTANCE: invention relates to a method for liquid-phase synthesis of isoprene by reacting formaldehyde with isobutylene or derivatives thereof in the presence of a solid-phase catalyst and subsequent extraction of the end product, characterised by that the catalyst used is phosphates selected from zirconium, niobium or tantalum phosphates, wherein the reaction takes place at temperature 100-200°C, pressure 7-20 atm and molar ratio of isobutylene or derivative thereof to formaldehyde equal to (1-20)/1.

EFFECT: use of the method enables synthesis of isoprene with high output and selectivity.

7 cl, 17 ex, 1 tbl