Amino Preparation From Amines TRIZ Cases

A two-stage chemical process produces ethyleneamine compounds using carbon dioxide adduction and chain extension reactions.

Salt exchange between ammonium and sulfonium cations yields pure acid generators, resolving the trade-off between manufacturing precision and production yield.

Converts 5-halomethylfurfural into cyclohexanone, hexanediamine, and nylon via catalytic oxidation and cyclization.

Replaces DMF and zinc with acidic acetonitrile to prevent oxidation contamination while maintaining single-phase reaction conditions.

A palladium-catalyzed Negishi cross-coupling reaction joins chloroanilines with zinc organyl compounds to synthesize substituted 2-aminobiphenyls.

Segmented synthesis uses copper iodide and platinum catalysts to produce nitro compounds, resolving industrial scalability bottlenecks.

A tetrahedral blue fluorescent material connects tert-butyl pyrene to a charge carrier transport unit on cyclohexane.

Homogeneous nickel catalysis achieves high yields with bromides and avoids dialkylated byproducts, overcoming low conversion limits of palladium methods.

Lithium tert-butoxide suppresses sulfonate hydrolysis during palladium-catalyzed coupling, boosting yields of sterically hindered arylamines.

Eliminating hazardous hydrogen sulfide gas from bis-choline tetrathiomolybdate production by using reduced pressure and ethanol addition for high yield.

Replacing expensive strong bases with potassium hydroxide lowers material costs while maintaining high selectivity in perfluoroalkyl compound production.

Quantitative resolution of racemic tapentadol intermediates using chiral acids to isolate specific stereoisomers.

Organic tertiary and quaternary amine compounds replace tetramethylammonium hydroxide to reduce toxicity while maintaining semiconductor processing efficiency.

CO2 adducts enable selective transamination for higher ethyleneamines, avoiding NaCl waste and corrosion from ethylene dichloride routes.

Imine compounds and alkali metals enable isomerization of aminocyclohexane derivatives at controlled temperatures, avoiding high pressure.

Polydiallyldimethylammonium acetate clarifies water by neutralizing colloidal charges to form removable flocs.

A divalent cation ionic liquid forms a protective film on metal surfaces to provide stable lubrication at room temperature.

Alkoxylated phenol formaldehyde and fatty acid polymers resolve demulsification conflicts caused by quaternary ammonium salt detergents.