Organic Compound Preparation TRIZ Cases

Sequential two-step temperature reactions minimize unreacted diphenylamine below 1 wt% while recycling stripped nonene to reduce alkylating agent waste.

A process for producing polyols uses a trialkylamine catalyst and a base promoter to form hydroxy aldehydes.

Quenching a hot saturated solution of terephthalaldehyde in aromatic solvent increases purity to 97.9% while eliminating complex extraction steps.

Using a volatile acid catalyst in transanhydrization simplifies separation and reduces by-products during acrylic anhydride synthesis.

Segmented LED and temperature control modules resolve scaling bottlenecks by preserving light absorption intensity during continuous flow operation.

Halogenated solvents swell polyethylene terephthalate for ambient depolymerization, eliminating high energy consumption while maintaining product purity.

Optimizing the reflux ratio concentrates crotonaldehyde for extraction, avoiding expensive ozone treatment facilities.

Lanthanide catalysts drive direct Knoevenagel condensation to synthesize 2-cyanoacrylate monomers, eliminating costly thermal depolymerization steps.

Tin and rare earth promoters in the supported catalyst suppress decarbonylation by-products during amination, improving yield.

Adding recyclate directly to cyclizing depolymerization prevents thermo-mechanical degradation and racemization during PLA recycling.

Segmented synthesis of perampanel intermediates eliminates transition metal catalysts, reducing reaction steps to two while achieving high yield.

A nucleophilic substitution reaction between a pentadecadienyl magnesium halide and an orthoformate ester followed by hydrolysis produces the target aldehyde.

Constrained diphosphine ligands optimize rhodium catalysis to boost butanediol yield while reducing n-propanol formation.

A benzofuran derivative preparation method uses a one-pot sequential reaction to shorten synthesis steps.

A phase transfer catalyst mediates phenol and dihalopolyalkylene ether reactions to produce aryl poly(oxalkyl) quaternary ammonium compounds.

Fusing metal oxide with urea creates a cyanate catalyst that transesterifies alkylene carbonates, avoiding hazardous phosgene and high pressure.

Photocyclization with blocking groups directs regioselectivity in non-symmetrical pyrene synthesis, overcoming statistical substitution distribution.

A phosphorylation reaction of aprepitant with phosphite under mild conditions using haloalkane and base to obtain fosaprepitant phosphate intermediate.

A supported nickel-based catalyst drives the hydrogenation of 2-hydroxypentanal to yield 1,2-pentanediol with high selectivity.

A gold and titanium catalyst maintains high activity during methyl methacrylate production.

Maintaining dinitrotoluene below 200 ppm prevents catalyst deactivation and by-product formation during continuous hydrogenation.

Copper-free click chemistry labels metabolic phospholipids without cytotoxic catalysts, enabling high-resolution imaging of biosynthesis.

Antimony catalysts resolve cost and stability trade-offs in esterification of lactic acid and ethanol.

Aqueous base extraction and porous adsorbent filtration remove acidic and colored impurities from ester synthesis.

Thermal decomposition of cobalt ammine carbonate deposits high-surface-area cobalt onto a titania support, resolving stability issues in acid media.

Optimized nickel-platinum ratios on carbon supports achieve high selectivity at 100-200°C, eliminating expensive high-pressure equipment.

Bacterial cellulose supports tetra-n-butyl ammonium fluoride to resolve hygroscopic instability and side product formation in fluorination.

A ruthenium catalyst complex with bifunctional phosphine ligands hydrates nitriles to amides in aqueous solutions.

Magnesium adamantane carboxylate stabilizes oil-based drilling fluids under high-pressure high-temperature conditions.

Replacing acidic supports with neutral carbon nanotubes eliminates side reactions while maintaining high catalytic activity and yield.

Copper sulfate replaces strong acids in allene ketone synthesis, eliminating corrosive conditions and hazardous handling requirements.

A silica-supported alkali metal catalyst with boron promoter converts acetone cyanohydrin side products into methacrylate esters.

Refluxing a dimethylaminoester precursor with iodide yields a polar fullerene derivative that increases short-circuit current density and fill factor.

A process for preparing crystalline L-MGDA trialkali metal salts through controlled alkaline saponification of L-alpha-alanine-N,N-diacetonitrile.

A rotary pressure filter uses large pores to separate solid aromatic carboxylic acids from solvent mixtures.

Pyrene compounds with hydrophilic substituents resolve poor 405 nm laser compatibility by increasing quantum yield and preventing aggregation.

A Ti-Si molecular sieve catalyst oxidizes dimethyl sulfide to dimethyl sulfoxide using hydrogen peroxide.

Converts R-2-aminobutanoic acid to S-beflubutamid via diazotization and bromination, resolving high manufacturing costs while maintaining enantiomeric purity.

Vinyl acetate generates acetaldehyde enolate in situ to suppress side reactions and improve Advantame yield.

Substituted sulfonyl metal salts enable high-efficiency N,N-disubstituted amide synthesis below 300°C, avoiding low yields from high heat.

Citric acid dissolves Mo, Bi, Fe, and Co precursors uniformly, eliminating uneven distribution caused by varying solubility in traditional methods.

Ruthenium catalyst drives isomerization of cyclohexenone precursors, replacing toxic reagents to boost yield.

Solid phase peptide synthesis combined with intramolecular serine ligation assembles daptomycin molecules efficiently.

Scavengers contact crude vinyl acetate to inhibit peroxide and heavy end formation, reducing purification costs.

Tertiary alcohol mediates nitro compound reduction to nitroso intermediates, eliminating extreme low temperature requirements for industrial production.

Reductive amination of sorbitol with ammonia and hydrogen minimizes aromatic by-products while maintaining high yield.

Amorphous phosphate salts on silica support catalyze hydroxypropionic acid dehydration, overcoming low yields and side product formation.

Stripping acrolein cyanohydrin at controlled pressure removes hydrogen cyanide, avoiding complex purification steps that introduce impurities.

A tapentadol synthesis route uses a chiral auxiliary to control stereochemistry during the reaction.

A compound cures in air or inert gas to form organic underlayer films with high gap filling and planarizing characteristics.