Preparation By Isomerisation TRIZ Cases

Weakly acidic solid adsorbents remove bound nitrogen from unsaturated alcohol streams to protect oxidation catalysts and improve aldehyde selectivity.

Chiral dimeric phosphazene catalyst drives asymmetric cyclization of citral derivatives into enantiomerically enriched isopiperitenol intermediates.

Aqueous stereoisomerization converts inositol to scyllitol diborate, eliminating toxic solvents and complex multi-step routes.

A lithium phosphate catalyst with controlled sodium and boron content drives propylene oxide isomerization to allyl alcohol.

A supported gold catalyst converts alcohols to aldehydes at 50-240°C, eliminating high-temperature side reactions and complex separation steps.

Engineered enzyme mutants catalyze the biocatalytic conversion of linear terpenes into cyclic products with high stereospecificity.

Segmenting hydrogenation into two steps with intermediate isomerization prevents catalyst crystallization while maintaining high trans isomer rates.

Distillative separation and aqueous base treatment isolate bis(diarylphenol) ligands from aluminum reaction products, resolving purity and yield trade-offs.

Novel chromanol derivatives synthesized from myrcene exhibit enhanced antioxidant properties.

A Ni-Al-V-Co metal complex catalyst drives thymol hydrogenation to produce D,L-menthol with high reaction activity.

Staged separation columns recover high-purity allyl alcohol from impure propylene oxide streams, reducing purification costs.

Direct isomerization of trans-isocarveol with a Group 5 metal catalyst eliminates derivatization steps, boosting yields while minimizing wastewater generation.

Replacing ethanol with carboxylic acid esters during copper-catalyzed isomerization suppresses side reactions, boosting limonene-4-ol yield.

A metal oxide coated ceramic corrugated plate catalyst enables stable catalytic activity for synthesizing citral intermediates.

Ruthenium catalyst hydrogenates cyclobutanedione precursors to yield cis-2,2,4,4-tetramethylcyclobutane-1,3-diol with high stereoselectivity.

A crystallization vessel uses a scattering light probe to detect seed crystal intensity and regulate solution temperature for precise process control.

Chromium catalyst with phenolic modifier selectively isomerizes limonene oxide mixtures, resolving low trans-isocarveol purity.

Solid-phase catalytic hydrogenation achieves high cis-trans ratios without solvents, resolving green chemistry trade-offs.

Supported ruthenium catalyst isomerizes tetraalkylcyclobutane-1,3-diols using hydrogen to modify cis to trans ratios.

Selective isomerization converts farnesol to nerolidol using transition metal catalysts, resolving separation challenges from similar boiling points.

Nitrogen monoxide converts undesired isomers into desired forms for unsaturated ketones and acids.