Organic Compound Preparation TRIZ Cases

Segment methanol synthesis into two reactors with an intermediate separator to prevent condensation in the second reactor and improve yield.

A process converts alkylene carbonate and alkanol into dialkyl carbonate and alkanediol using transesterification.

Covalent merging of photoinitiator and amine prevents migration and odor in UV curable food packaging inks.

Staged oxidation of pseudocumene limits early oxygen feed to reduce bifunctional byproducts and simplify catalyst recovery.

Low viscosity polyvinyl acetate stabilizes peroxide droplets while maintaining flowability at subzero temperatures.

Ion-exchange pre-treatment removes interfering cations by 90%, resolving suboptimal separation purity in betaine recovery from molasses.

A water and ethanol solvent system prepares escitalopram pamoate crystal form A with high purity.

A quaternary ammonium compound achieves selective sensory nerve block through structural modification.

A one-pot two-step methodology combines condensation and cyclization to synthesize clobazam intermediates using water as a reaction medium.

Maintaining maleic acid proportions below 70% prevents precipitation and blockages during decomposition.

Ionic liquid oxidation of p-toluic acid reduces impurities, eliminating catalytic hydrogenation and lowering purification costs.

High ammonia ratios and evaporative concentration resolve contradictions between productivity and process economics in ethanolamines manufacturing.

Metal salt additives reduce nitrogen competitive coordination to prevent rhodium catalyst inactivation and improve chiral gamma-secondary amino alcohol yield.

Direct reduction of 2,6-dinitrobenzoic acid using sulfide agents overcomes low yields and side reactions.

A segmented phosgenation process recycles unreacted materials to produce high purity aliphatic isocyanates.

Copper compounds mediate Grignard reactions with ethylene oxide, suppressing undesired 1-arylethanols and eliminating expensive palladium catalysts.

A process reacting monoethylene glycol with ammonia to produce ethyleneamines using a heterogeneous catalyst.

A nucleophilic substitution and Michael addition route produces hetero-type monodisperse polyethylene glycol with terminal amino and carboxyl groups.

Continuous liquid phase dehydration converts aqueous 3-hydroxypropionic acid to acrylic acid using inert solvents and polymerization inhibitors.

A catalyzed reaction process converts carbon monoxide and hydrogen into methanol using a transition metal complex with Lewis basic ligands.

A sulfonated calixarene polymer reversibly binds guest molecules through electrochemical stimuli.

Microwave heating with heterogeneous acidic catalysts produces mixed macrocycles faster than conventional methods while enabling efficient catalyst recovery.

Segmenting absorbers into high and low temperature zones maintains temperatures below 150°C to prevent product discoloration while improving process efficiency.

Hydrated triflic acid enables continuous transanhydrization by leveraging volatility differences to separate the anhydride from heavy catalyst residues.

Ethylene oxide scavenges water to shift equilibrium, enabling high dimethyl carbonate yield at moderate pressure without expensive dehydrating agents.

One-step hypochlorous acid chlorination of dopamine hydrochloride produces 2,5,6-trichlorodopamine while minimizing dopaminochrome by-products.

Electrodialysis extracts 80% of minerals from residual molasses, allowing concentration and crystallization into high-purity lactose powder.

Manganese catalysts with P,N,N ligands enable fast ketone hydrogenation rates, replacing expensive noble metals.

Hydrogenolysis converts glycerol to propylene glycol while methanation eliminates catalyst deactivation.

A molybdenum dioxo catalyst on activated carbon produces hydrogen and aldehydes from biomass-derived alcohols under mild conditions.

Small-molecular fused ring aromatic hydrocarbons replace high-molecular matrices to resolve resolution and sensitivity trade-offs in lithography.

An O-alkylcarboxamide intermediate enables selective catalytic hydrogenation of carboxamides to amines under mild conditions.

Fractional liquid-liquid extraction separates dichlorophenols using pH-based phase transfer to resolve low conversion and waste issues.

Limiting aldehyde concentration below 15% by mass reduces ligand degradation, avoiding complex replenishment systems and improving economic viability.

A crosslinkable composition uses a polar agent to suppress bleeding out from polyvinyl alcohol type polymers.

Enzymatic kinetic resolution of 3-oxodicyclopentadiene yields enantioenriched prostaglandin J intermediates.

Hofmann rearrangement converts optically active 2-aryl cyclopropane carboxamides into cyclopropylamine derivatives using sodium hypochlorite.

Organic hole and electron transport compounds in the charge generation layer extend device lifetime while reducing current density requirements.

Reaction products of heterocyclic compounds and isocyanates accelerate anaerobic polymerization.

A segmented synthesis method prepares 2-(5-isoxazolyl)-phenol derivatives using sequential halogenation and oxidation steps.

Rhodium catalyst with diphosphine ligand produces 4-acetoxybutyraldehyde from allyl acetate, suppressing branched byproduct formation.

Selective reductive amination of aliphatic cyanoaldehydes using heterogeneous metal catalysts extends catalyst lifetime and improves yield.

Fluorinated diamine units reduce crystallinity in polyimide, resolving the trade-off between thermal stability and transparency for flexible displays.

Acetic acid washing reduces sulfate levels below 500 ppm in lithium 5-sulfoisophthalic acid, eliminating costly post-production removal treatments.

Sequential water extraction and distillation remove permanganate reducing compounds from methanol carbonylation streams, improving acetic acid quality.

A heterogeneous palladium catalyst enables one-pot conversion of aldehydes and ketones into primary amines and amides.

A solvent-free one-pot methodology synthesizes poly(anhydride-esters) using high vacuum and heat to treat hydroxy-carboxylic acid compounds with specific linkers.

Segmented alkoxylation with a rest period reduces residual Bisphenol A below 100 ppm, resolving the trade-off between purity and production efficiency.

Adding alkali ditaurinate to isethionate ammonolysis shifts equilibrium, raising taurine yield above 90% while reducing waste discharge.