METHOD OF FUNCTIONALISING POLYOLS BY A HYDROFORMYLATION-ACETALATION TANDEM REACTION USING A WATER-SOLUBLE CATALYST SYSTEM Russian patent published in 2019 - IPC C07C41/54 C07C43/30 C07C45/50 B01J23/46 B01J31/24 

FIELD: technological processes.

SUBSTANCE: invention relates to a method of functionalising polyols with alkyl moieties by a hydroformylation-acetalation tandem reaction using a water-soluble catalyst system for producing cyclic acetals, characterized in that autoclave is used to mix olefin (A), rhodium acetylacetonodicarbonyl Rh(acac)(CO)₂ (B), with ratio B: A from 1:500 to 1:10,000 in weight fractions, water-soluble ligand TPPTS (C), with ratio C:B from 3:1 to 50:1 in molar ratio, polyol (D), taken in molar ratio of D:A from 1:1 to 5:1; water taken at weight ratio of water to polyol from 0.2:1 to 3:1, 70 % solution of sulfuric acid (E) at ratio of D:E from 10:1 to 200:1 in weight fractions; as well as toluene, taken in volume ratio of tolul: water from 0.1:1 to 2:1; pressure of synthesis gas is created in autoclave (CO/H₂=1:1) 0.1–10 MPa, the mixture is heated to 30–120 °C, synthesis is carried out while stirring by mechanical agitator at 500–1,000 rpm for 2–20 hours, wherein the main products are obtained – cyclic acetals, after completion of reaction, the autoclave is cooled, the synthesis gas pressure is relieved, then the catalyst system containing water is separated, the rhodium complex with the water-soluble ligand, acid and residual polyol by means of phases separation, organic phase is separated into components by a vacuum distillation method, and the aqueous phase is used to obtain acetals repeatedly; as raw material for process from polyols can be used ethylene glycol, glycerine, pentaerythritol, pinacon, 1,3-propanediol, 1,3-butanediol, xylitol, sorbitol, xylose, glucose, as unsaturated substrates there can be used linear olefins with chain length C₂-C₁₄, styrene, allylbenzene, norbornylen, terpenes, cyclohexene, octadiene-1.8, limonene, oligomers of lower olefins (propylene trimers, dimers of butylene, industrial oligomers of ethylene), olefin-containing gases (from processes of catalytic cracking, pyrolysis, oxy-cracking), catalytic system for carrying out the process contains a rhodium complex (Rh(acac)(CO)₂ (acac=acetylacetone), HRh(PPh₃)₃(CO), RhCl(CO)(PPh₃)₃, Rh(cod)₂BF₄ (cod=cyclooctadiene), Rh[(cod)Cl]₂), a water-soluble phosphine ligand TPPTS and an acid (HCl, H₂SO₄, p-TSA, solid acids – Amberlyst-15, Nafion, Wofatit 200 KPS, KU-2). Catalyst system in the aqueous phase can be separated from the reaction products that are extracted into the organic phase, and thus the catalyst system can be used many times.

EFFECT: novel method of producing cyclic acetals that can be used as solvents, detergents, aromatic compounds, lubricants, fuel components, as well as renewable components of bio-oil.

1 cl, 2 dwg, 8 ex