Organic Compound Preparation TRIZ Cases

This case recovers substantially dry ethanol from crude ethyl acetate while recycling latent heat to the reboiler, reducing steam use.

Offset plates support separate tube groups, allowing fluid exchange and axial thermal expansion while limiting pressure drop.

A thermally regenerable anhydride mediates monoacid conversion, enabling selective production with reuse and fewer byproducts.

Fluid-exchange cutouts let coolant pass through support plates while stabilizing reactor tubes and limiting pressure drop.

Because Juncus effusus provides only 0.75–5 ppm, staged reactions and purification produce 1-Methyleffusol in useful quantities.

In-situ nitrate reduction creates fleeting diazonium intermediates for one-step halogenation while limiting explosive salt accumulation.

Bromination, oxidation, and carbonylation streamline cyclosulfonone production while reducing impurity levels, wastewater, and hazardous reagents.

Transverse support plates stabilize reactor-vessel tubes while cutouts preserve fluid exchange and limit pressure loss.

A ligand–base palladium catalyst addresses precipitation and cost barriers by converting aromatic chlorides at lower loading.

Adding ammonia during continuous nitro-compound hydrogenation limits high-boiling by-products, preserves catalyst activity, and improves amine yield.

A spiral coil heat exchanger dissolves carotenoid crystals at 50–70°C, limiting isomerization before emulsification and spray granulation.

See how iptycene-backed multidentate phosphite ligands coordinate nickel to improve hydrocyanation yield and selectivity while limiting by-products.

Compound A crystallization uses mixed solvents, p-toluenesulfonic acid, and pH adjustment to yield high-purity crystals for industrial handling.

Guanidine-mediated crystallization forms metastable Form B aggregates that improve flowability, reduce dust, and preserve rapid dissolution.

Water contacting at 50–105°C decomposes esterified catalyst products, limiting alkene formation and improving ester yield.

Controlled trace esters in a methyl methacrylate and α-olefin blend improve light stability and heat resistance without sacrificing resin transparency.

Recycling unreacted synthesis gas while limiting catalyst temperature and carbon monoxide suppresses by-products in low-stoichiometry methanol production.

Electrostatic binding lets cationic lipids complex with anionic drugs for intracellular delivery while reducing cytotoxicity.

Long-chain saturated fatty acids esterified with alkoxylated polyols address viscosity and pour-point tradeoffs in biodegradable base oils.

See how pyridine and APC streamline iopamidol preparation with hydrolysis, avoiding protective groups and high-boiling solvents to reduce impurities.

Methyl methacrylate, α-olefins, and methyl isobutyrate support UV stability while preserving methacrylic resin transparency and heat resistance.

Controlling ammonia below 20 g/L and pH at 8–10 helps produce GAA from cyanamide and glycine while limiting melamine.

An N-hydroxysuccinimide ester route joins 8-amino caprylic acid with a salicylic derivative for scalable, lower-hazard salcaprozic acid production.

A ruthenium-tin alloy adsorbs hydrogen efficiently, enabling alcohol conversion at lower pressure and temperature without platinum.

Recover hydrogen bromide from ammonium bromide to reduce salt-laden effluent and support aminocarboxylic acid production.

Extractive distillation with sulfolane breaks the EG–EGDA azeotrope, while recovery and cooling recycle the entrainer.

Gas-phase equilibrium limits product yield; a dew-point cooling surface condenses product near the catalyst layer to shift equilibrium.

Conventional diuretics can disturb electrolytes; UT-A and UT-B inhibition raises urine volume while preserving sodium, potassium, and chloride excretion.

Proton donors and aldehyde compounds keep intermediates in the reaction system to improve acrylic acid derivative conversion and yield.

Nitric acid oxidation and activated carbon bleaching remove chromophoric and volatile impurities from biotech-derived dicarboxylic acids.

Isoprenol photooxidation provides a scalable, solvent-free route around unreliable VGDA supplies for 4-hydroxy-2-methyl-but-2-enal.

Different coolant temperatures along the ODH reactor favor ethylene formation while limiting carbon monoxide and carbon dioxide.

Sequential precursor loading and pH 7.0–11.5 treatment suppress gold aggregation while improving vinyl acetate selectivity.

A higher-boiling flux lowers humin viscosity during thermal separation, improving levulinic acid recovery while reducing fouling and degradation.

Manganese catalysts and weak bases hydrogenate esters while preserving optical purity without relying on strong alkoxide bases or rare metals.

Metal oxide catalysts on glass or ceramic supports improve glycolaldehyde yield while limiting char in carbohydrate pyrolysis.

A chemoselective tandem route uses chiral lactone formation and bicyclization to streamline synthesis of 1,6-diazabicyclo[6.2.0]decane compounds.

Weak membrane bonding can limit catalyst loading and stability; this case uses porous channels and carbon-wrapped cobalt to retain active centers.

Adsorption, washing, and desorption recover alkoxide from PET mother liquor, lowering energy use and cost while enabling catalyst reuse.

Two connected reaction parts transfer a phthalic acid–nitrile mixture through 350–400°C processing to improve purity and limit by-products.

Hydrolysis at 120–150°C followed by reduced-pressure distillation decomposes transmittance-affecting impurities in ethylene glycol.

Targeted amino acid substitutions in O-methyltransferases tune substrate binding and catalysis for efficient, specific stilbene production.

Adding 0.5–500 ppm of specific aldehydes to alkyl (meth)acrylates reduces yellowness quickly and during storage.

This MOF uses a 1.0–2.0 largest-to-smallest pore ratio and non-intersecting through-pores to adsorb water at low relative pressure.

Conventional catalysts lack C2-3 selectivity; reduced multimetal solids convert carbon oxide and hydrogen under low-pressure conditions.

Acid-catalyzed dehydration and carbon–carbon cracking turn renewable dihydroxy carbonyls into pyruvic acid, glyceraldehyde, and lactic acid.

High-temperature calcination and controlled surface properties stabilize fluidization and improve glycolaldehyde yields from sugar thermolysis.

A calcined supported catalyst couples α-H-containing ketones and alcohols to make high-carbon ketones without external solvent or high-pressure hydrogen.

Genetically engineered microbes enable bio-based ACDMT synthesis for effective, biodegradable polymers used as rheology modifiers.

Alkaline depolymerization breaks down waste resin, while solvent solubility differences crystallize high-purity dihydroxy compounds from organic impurities.