SYNTHESIS OF BUILDING BLOCKS AND STARTING SUBSTANCES FOR OBTAINING RENEWABLE POLYMERS Russian patent published in 2023 - IPC C07C29/149 C07C67/08 C07C67/303 C07D309/30 B01J31/24 

FIELD: renewable starting materials production.

SUBSTANCE: invention relates to methods for producing renewable starting materials for producing polymers, the methods comprising obtaining a lactone derivative from CO₂ according to the following reaction

;

and processing the CO₂ derived lactone to form a renewable starting material, wherein the processing of the CO₂ derived lactone comprises selectively hydrogenating the CO₂ derived lactone to form a hydrogenated CO₂ lactone derivative according to the following reaction:

.

Further, the hydrogenated derivative from CO₂ lactone is processed using systems of homogeneous and heterogeneous hydrogenation, alkene metathesis. The process may also include alkoxycarbonylation of the CO₂ derivative of the lactone to form a diester and hydrogenation of the diester.

EFFECT: methods have been developed for the synthesis of starting materials for the production of polymers, including renewable polymers, from renewable resources such as CO₂ in high yields.

11 cl, 8 dwg, 4 tbl

Pd-катализатор - Pd-accelerator

Фосфин - phosphine