Organic Compound Preparation TRIZ Cases

Iodobenzene catalyzes peroxyformic acid oxidation of ethyl acetoacetate, eliminating chlorine waste and reducing formamide consumption.

Precise supersaturation and cooling rates yield compact L-alanine crystals, resolving filtration difficulties caused by needle-shaped impurities.

Buffer vessel heats suspension and enriches constituents to dissipate oversaturation, preventing uncontrolled crystal growth and agglomeration.

A process merges glycerol dehydration with propylene oxidation to produce acrolein using a unified reactor system.

Neutralizing and separating phases removes chromophores from diphenylmethane polyamines, enabling light-colored polyurethane production.

Demethylates spiro-venlafaxine with alkane thiolate anion to resolve safety hazards from hazardous reagents while achieving high purity.

Iron and cobalt carbon catalysts replace precious metals to convert carbon dioxide into acetic acid, reducing iodomethane waste.

Replacing noble metal catalysts with inexpensive La3+ salts reduces manufacturing costs while maintaining high isomerization efficiency.

Chemical synthesis of ladderane lipids creates impermeable membranes to prevent drug leakage from liposomes.

Alkali metal doped activated carbon catalyst converts ethanol to higher alcohols while reducing greenhouse gas emissions.

Decomposed hydrotalcite mixed with metal salts and chelating agents converts ethanol into n-butanol, reducing energy costs compared to hydroformylation.

Indium oxide on zirconium dioxide catalyst maintains stability during CO2 hydrogenation, preventing deactivation from water inhibition.

Converting biomass lignin into phenol via iron oxide catalysis, reducing reliance on depleting petrochemical resources.

Sulfuric acid adjusts the pH of alcoholic basic lignin to precipitate inorganic salts, preventing foam formation during alcohol evaporation.

A palladium catalyst system with a tertiary phosphine group and phase-transfer catalyst enables arylamine production.

A palladium-arsenic catalytic process converts nitriles into amides under neutral pH and low temperatures.

Vacuum distillation separates tert-butyl esters from carboxylic acids at lower temperatures, preventing thermal polymerization and equipment contamination.

Crystallization removes glyoxal from acrylic acid without reverse osmosis, achieving depletion coefficients above 10,000 to maintain space-time yield.

A gold catalyst enables oxidative esterification of aldehydes to carboxylic acid esters.

Inverting the reaction sequence eliminates intermediate purification and harsh conditions, reducing production costs for 4-aminoindane derivatives.

Catalytic distillation separates isobutene from difficult-to-separate C4 mixtures, reducing reactor size and nitrogen usage.

Segmenting the catalyst bed into zones with distinct particle sizes reduces coking and extends lifetime while maintaining high yield.

A dividing wall column separates crude n-butanol into high-purity product streams using a specific liquid split ratio.

Single-step nitration of 2-hydroxyethyl acrylate eliminates EGDN and hydrogen chloride formation, achieving 85% yield.

Phase separation enriches the salt while distillation removes alcohol byproduct, resolving thermodynamic limitations.

Sodium hydride and palladium catalyst reduce alkenyl active methylene compounds, replacing hazardous reagents to improve atom economy.

Segmented synthesis of nylon 6 copolymers raises melting points to 270°C without disrupting uniform molecular sequential distribution.

Bismuth-containing multi-element oxide catalyst bodies increase initial selectivity while maintaining long-term stability during partial gas-phase oxidation.

Replacing alkaline catalysts with calcium-based systems yields fatty amides with lower viscosity and clarity, eliminating gelation issues.

Arachidonic acid oxidation produces unsaturated decanals, resolving food law compatibility issues inherent in synthetic methods.

Reactive additives convert sulfur trioxide impurities into heavy byproducts, enabling methanesulfonic acid recovery at lower vacuum pressures.

Lewis acid ionic liquid dissolves blue anthrone to prevent dioxin formation during chlorination.

Adjusting oxygen supply rates during oxidation reactions in deep vessels to control gas evolution and maintain stable production.

Dialkylamine reagents enable regioselective O-dealkylation of alkoxybenzaldehydes, overcoming selectivity losses from harsh Lewis acids.

Recovering reaction heat as high pressure steam drives a blower turbine, while low pressure steam powers an absorption refrigerator to reduce production costs.

Dialkylcarbonate reacts with organic acids in alcohol solvents to form esters without extrinsic catalysts.

Synthesizing benzyl cis-cyclohexane triesters with alkylamine catalysts replaces phthalates to reduce carbon footprint.

Esterifying fatty acid distillate with alcohol at high temperatures without a catalyst to produce bio-diesel fuel.

Dehydrocyclotrimerization catalyst converts bio-acetone to bio-mesitylene, overcoming low chemical conversion efficiency and time on stream limitations.

Shaped Raney catalyst bodies form intermetallic phases to enable higher space velocities in hydrogenation reactions.

Liquid vinyl-blocked bio-based polyfunctional carboxylic acids resolve crystalline solid incompatibility to form homogeneous curable coating compositions.

Pre-mixing gas and liquid streams via a static mixer eliminates concentration gradients that reduce space-time yield in hydrogenation units.

Solvent extraction purifies ethyl acetate streams by transferring impurities into a selective solvent phase, preventing foam formation during separation.

Cis-positioned diphosphite ligands resolve low n-selectivity by increasing the n-product to iso-product ratio in rhodium-catalyzed hydroformylation.

Aqueous L-valine solution receives L-glutamic acid and acidic pH adjustment to drive vacuum concentration crystallization into dense granules.

Nitro-substituted aromatic compounds absorb light to initiate photodissociation in aqueous environments.

Converting carbon monoxide in the recycle gas stream reduces off-gas volume and improves glyoxal selectivity.

Preferential crystallization isolates optically active imidazolidinone derivatives from isomeric mixtures, eliminating cumbersome salt resolution steps.

A method synthesizes 2,2-dimethylbutanoic acid using lithium diisopropylamide and organic solvents at controlled temperatures.