Organic Compound Preparation TRIZ Cases

Phenol with metal hydroxide and controlled water content depolymerizes polycarbonate to BPA while avoiding toxic cosolvent residues.

A stepwise trofinetide synthesis uses a novel intermediate and controlled deprotection to deliver high purity with scalable production.

Ether- and acetal-based solvents limit humins and solvent degradation during furfuryl alcohol hydration, easing levulinic acid recovery.

A two-stage ketene reaction with rectification and recycle improves conversion of unsaturated carboxylic acids while limiting acetic acid byproducts.

Aqueous co-precipitation yields high-purity vanillin (meth)acrylates while retaining inhibitor stabilization and avoiding complex purification.

Group 6 organometallic complexes use tailored ligand structures to keep olefin metathesis active and stable at low catalyst loadings.

Partial hydrogenation and double purification cut unsaturated bonds, VOCs, and odor in vegetable oil polyols for durable polyurethane foam.

Controlling the formaldehyde-to-isoprenol ratio before silver-catalyzed oxidation prevents clogging and pressure drop while sustaining selectivity.

A co-solvent with polyhydric alcohol enables fast low-temperature polyurethane depolymerization and simple separation of high-purity recycled polyol.

Controlled startup pressure and temperature restore continuous isocyanate production while limiting by-products, deposits, and downtime.

A two-zone catalytic route separates syngas conversion into methanol/propanol formation and isobutanol synthesis to improve selectivity and productivity.

A selective coupling, desulfonylation, and oxidation route produces high-purity MK-7 without column chromatography, improving yield and scale-up.

Selective deuterium exchange through a deprotonated intermediate raises D-serine-2-d incorporation above 90% while reducing reagent cost and yield loss.

A disc-stack separator cleans methanol and conventional fuel onboard ships, enabling shared tank use while preventing contamination and engine damage.

Replacing nitrate and ammonium precursors with acetate and formate salts speeds catalyst drying while reducing nitric acid, ammonia, and corrosion.

Adding formic acid to hard irrigation water converts alkaline salts into soluble formates, improving soil infiltration and nutrient uptake.

A Grignard-ketene route raises 3-trifluoromethyl acetophenone oxime purity and yield while reducing isomers, salt waste, and effluent.

Alkali- or alkaline earth-doped CuMn oxide boosts C-C coupling and alcohol conversion, raising propanol and isobutanol productivity.

Cooling-tower separation recovers lactic acid and dimers before distillation, cutting energy use while enabling high-purity acrylic acid.

A single reactive distillation column carries out both transalcoholization steps, cutting complexity and energy use for azeotropic alcohol systems.

Composite phase-transfer catalysis co-produces valpromide and sodium valproate while reducing side reactions, pollution, and reagent cost.

Heat-integrated gas recycling and optimized CO2/H2 ratios improve methanol yield while cutting inert gas discharge and CO2 emissions.

A D-valine ester resolution route isolates R-CHPGA and enables scalable R-oxybutynin hydrochloride production with >99% enantiomeric purity.

Reduced-pressure wiped-film evaporation purifies cis-2-alkenoic acids while limiting trans isomer formation and preserving yield.

Direct organozinc reaction with alpha-(halomethyl) acrylates avoids transmetallation and simplifies alpha-substituted acrylate synthesis.

Electrical heating replaces heat pumps in CO2-to-methanol recovery, enabling stable start-up and ≥98 wt.-% methanol with renewable power.

Palladium-catalyzed carbonylation uses silanes and non-polar solvents to raise tetracycline yield, avoid epimerization, and simplify isolation.

Long-chain dialkyl ether intermediates avoid cytotoxic short-chain alkanes while enabling fermentation-based production of resin monomers.

A basic co-catalyst with potassium hydroxide and added hydroxides suppresses diaminocyclohexane in Raney nickel hydrogenation of adiponitrile.

Salt formation with maleic, hydrochloric, and sulfuric acids improves pyrrolopyrimidine solubility, stability, and hygroscopicity.

A modular pilocarpine route uses formula I and II intermediates to avoid long, hazardous synthesis paths while improving purity and overall yield.

Selective dithionite reduction converts a difficult aldehyde impurity in a citalopram intermediate into the desired hydroxymethyl product during aqueous washing.

An integrated recovery column reclaims unreacted isobutyl aldehyde and catalyst, cutting waste, energy use, and neopentyl glycol costs.

Direct acid and alcohol esterification turns fermented beet molasses into betaine esters, avoiding complex extraction for surfactant use.

Water-vapor-assisted amorphous phosphate salts improve acrylic acid yield and selectivity while limiting side products and catalyst deactivation.

Electrostatic amine reagents form stable nucleic acid complexes for intracellular delivery and support lower-dose, safer non-viral transfection.

Removing or neutralizing fatty acids and high-boiling impurities before heating helps retain nootkatol and limit nootkatene in terpene blends.

Interstage cooling and recirculation control resin swelling in adiabatic reactors while sustaining high monoethylene glycol selectivity.

An intermediate flash drum removes hydrogen before cooling and a second reactor, balancing exothermic heat control with neopentyl glycol recovery.

Internal separation walls combine distillation functions and heat exchange to produce high-purity isopropyl alcohol with lower energy use.

See how catalyst sphericity, particle size, and composition improve activity and stability in unsaturated acid production.

Hydrolysis can suffer from incomplete conversion, high catalyst consumption, and difficult filtration; size-controlled CeO2 granules address these limits.

A divided distillation column and layer separator purify isopropyl alcohol while reducing thermal and cooling energy needs.

Heat exchange cools the reaction product while supplying thermal energy to distillation, reducing energy use and improving alcohol purity.

HOMO tuning through extended π-conjugation improves hole mobility and thermal stability in spirobifluorene HTMs for perovskite cells.

A staged process separates hydroxypivaldehyde and catalyst, recycles catalyst salt, and converts HPNE-containing streams into neopentyl glycol.

Organolithium exchange, staged alkylation, and controlled stereoisomer formation improve the safety, purity, and scalability of LPA antagonist synthesis.

Recycled ammonia dissolves branched-chain amino acid crystals before controlled crystallization, reducing pH-agent use and salt waste.

React alkyleneurea with haloalkanes or haloaminoalkanes, then neutralize the salt to favor straight-chain ethyleneamines.

Gas-phase 2-butanol dehydrogenation with a Co3O4@C catalyst balances MEK conversion and selectivity at moderate temperatures.