Organic Compound Preparation TRIZ Cases

Converting hydroxyl groups to triflates enables Lewis acid cleavage, overcoming deactivation to produce low-molecular weight fluoropolyethers.

Adding a TEMPO-based inhibitor during phosgenation suppresses side reactions, eliminating impurities and avoiding separate purification steps.

Octahedral zinc complex with imidazole ligands prevents decomposition during transesterification, enabling easy catalyst recovery.

Strongly basic macroreticular polymeric resin catalyzes aldol condensation, eliminating salt contamination and enabling catalyst recycling.

Reducing sulfur trioxide concentrations during ATBS synthesis minimizes IBSA and IBDSA impurities, eliminating complex purification steps.

In situ water removal via permselective membranes maintains stable H2/CO ratios and boosts CO conversion rates in Fischer-Tropsch reactors.

Ozonolysis of anethole followed by oxidative workup yields 70-80% pure 4-methoxybenzoic acid, replacing petrochemical routes.

A selenium-based catalyst system with pyridine amine compounds drives oxidative carbonylation of alcohols to produce dialkyl carbonates.

Optimizing hydrolysis and substitution steps with a phase transfer catalyst resolves yield-purity trade-offs in 2-(aryloxymethyl)benzaldehyde production.

Gas-phase oxidative dehydrogenation using a heterogeneous ruthenium catalyst produces terpene aldehydes and ketones without toxic oxidizing agents or solvents.

A Cu(I)-catalyzed C—C coupling reaction between alkyl Grignard reagents and alkyl tosylates forms branched aliphatic alcohols.

Controlling liquid-phase Reynolds number during phthalate hydrogenation suppresses side reactions, reduces acid value, and extends catalyst lifetime.

Cyclic reactor zones alternate between glycerol dehydration and coke removal to sustain catalyst efficiency without interrupting acrolein production.

Flared downcomer in air-lift reactor improves cumene hydroperoxide oxidation selectivity by suppressing dicumyl peroxide formation.

Sortase A-mediated ligation merges SCRII monomers into oligomers, resolving low biotransformation efficiency by reducing reaction time from 48 hours to 3 hours.

Liquid-phase aldol condensation of acetic acid and formaldehyde produces crude acrylate with high selectivity.

Estolide polyethylene glycol diesters act as viscosity index improvers by adjusting molecular structure with temperature.

Water-soluble cation exchange resins increase carbohydrate solubility in liquid media to facilitate catalytic conversion.

Esterifying terephthalic acid with (4-methylcyclohexyl)methanol and recycling the hydrogenation by-product to form 1,4-cyclohexanedimethanol.

Distillation removes high-boiling by-products from cyclohexanol, preventing adipic acid coloration.

A heteropolyacid catalyst system incorporating phosphorus, silicon, copper, and tungsten enhances acrolein selectivity during glycerin dehydration.

Recovering thermal energy from heating steam condensate to generate process steam for reactive rectification columns.

Hydrophobic solvent extraction recovers ruthenium catalyst from glycolic acid effluent, preventing thermal degradation during concentration.

Oxidizing formate ions from cesium salt solutions reduces reagent costs while removing impurities.

Reducing DABCO catalyst to 0.1-2 mol% lowers manufacturing costs and effluent discharge while maintaining high azoxystrobin yields.

Reacting acrylic acid with diphenyl carbonate eliminates hydrogen chloride corrosion and lowers production costs.

Combines IF5-pyridine-HF with amine hydrogen fluoride salts to drive nucleophilic substitution reactions on organic substrates.

Vertical tubular reactor with segmented catalyst bed enhances mass transfer rates during hydrodechlorination of dichloroacetic acid.

Ultrasonic waves control crystalline phase composition in copper-zinc catalyst preparation, resolving stability and yield trade-offs.

A palladium catalytic system reacts ethylenically unsaturated compounds with formalin and alcohols to produce methyl or isopropyl esters.

A ruthenium carbonyl complex with a tridentate aminodiphosphine ligand reduces halogenobenzoic acid esters to alcohol compounds.

Solid hydrotalcite catalyst converts itaconic acid to methacrylic acid, eliminating reactor corrosion and waste from homogeneous base processes.

Ozonation modifies plant matrices to increase lutein extraction yield while preserving antimutagenic activity against aflatoxin B1.

Switching from acetic acid to aprotic solvents eliminates distillation steps and prevents deacetylated impurity formation.

Heat treating crude acrylic acid at 100°C removes protoanemonin impurities through thermal decomposition.

Calcining a dry powder mixture with a solid tungsten compound yields an oxide catalyst for gas-phase reactions.

Removing chromium from the active catalyst components eliminates carcinogenicity and regulatory burdens while maintaining high hydrogenation performance.

Diluting levulinic acid with inert gas before heating prevents polymerization during oxidative cleavage, enabling stable conversion to maleic or fumaric acid.

Lithium halides mediate complex salt formation to prevent insoluble polymerization during water removal, enabling high yields with hindered substrates.

Demethylating a polysulfonium intermediate with aqueous hydrohalic acids eliminates salty waste byproducts and reduces purification costs.

A catalytic asymmetric ortho-selective mono-halogenation process introduces point-chirality and halogen handles into bisphenol scaffolds.

Distilling the monomer with diphenyl sulfone removes impurities, allowing catalyst-free polymerization that achieves inherent viscosity above 0.9 dl/g.

Rhodium-catalyzed hydroformylation converts chemical intermediates into perfuming ingredients, resolving low yield and selectivity issues in existing methods.

Reacting ruthenium(III) halides with bases and vinyl esters yields concentrated active catalysts, overcoming low yield bottlenecks in transvinylation.

A nickel-ligand catalyst system in pentenenitrile solvent enables efficient butadiene hydrocyanation and isomerization at low temperatures.

Nonaqueous solvent dissolves lactide during lactic acid ester hydrogenation, preventing reactor plugging and catalyst fouling.

A calcium-based catalyst system synthesizes alkanolamide surfactants with high conversion rates.