Thiol Preparation TRIZ Cases

Acid catalyst enables thiocarboxylic acid addition to unsaturated esters, resolving yield losses from substrate degradation in conventional methods.

Mixed mercaptan compositions combine tert-dodecyl and branched alkyl components to enable higher SH content while maintaining production rates.

Replacing thiourea with nitrogen-free thioamides eliminates impurity generation and simplifies waste treatment equipment requirements.

A reactive stripping packed column performs alkaline hydrolysis of hydantoin to produce methionine salts.

A multi-step synthesis converts cystine to N-acetylcysteine amide using dithiothreitol reduction and optimized reaction conditions.

Multi-stage dihydrolipoic acid synthesis uses controlled temperature and pressure to suppress by-product formation.

Amphoteric ion molecules bond to nanoparticle surfaces to distribute charges, reducing non-specific adsorption across wide pH and salt ranges.

USY zeolite catalysis produces dialkylate-rich alkylaromatics, resolving viscosity index and seal compatibility trade-offs.

A process prepares hydrofluoro alcohols using difunctional alkylating compounds and fluoride anions to create stable molecular structures.

Alkylating cyclohexanecarboxylic acid derivatives with alkyllithium and secondary amines improves yield and purity while reducing by-products.

N-(2-acylaryl)-2-[5,7-dihydro-6H-dibenzo[c,e]azepin-6-yl]acetamide compound enables metal complex formation for chirality interconversion.

Segmented synthesis of 3-mercaptopropionic acid using aqueous sodium hydroxide and vacuum distillation reduces thermal degradation and boosts yield.

Treating polythiol with a reducing agent lowers active oxygen below 200 ppm, preventing byproduct formation and maintaining optical lens quality.

UV-initiated branched C10 mercaptan production reduces purification complexity by separating sulfides through distillation and base washing.

Split feed distillation separates acrolein by introducing liquid streams at different temperatures, reducing toxic holdup and reboiler duty.

Continuous falling film distillation removes unsulfurized alkylphenols to eliminate estrogenic contaminants while preserving alkalinity reserve.

A process converts polyunsaturated alcohols to ketones using thiol intermediates and antioxidants.

Buffered aqueous reactions with thiolates suppress thioacetal and aldol condensation impurities to yield high-purity alkylthio aldehydes.

Optimized cesium tungsten catalysts boost methyl mercaptan selectivity while lowering hydrogen sulfide energy input.

Sulfhydrylase enzyme synthesizes functionalized mercaptans with over 85% yield while preventing sulfide and polysulfide by-product formation.

A catalytic process converts hydrogen sulfide into methyl mercaptan using alkali metal molybdates.

Triazole reading molecules replace complex mass spectrometry with quantum tunneling, enabling high-throughput single-molecule protein sequencing.

Sulfide-based compounds formed through Michael addition reactions provide effective corrosion inhibition for metal surfaces.

pH 7-8 ring-opening condensation of cysteine with di-tert-butyl iminodicarbonate improves synthesis yield while lowering production costs.

Selective purification of crude reaction products reduces production costs while maintaining required purity levels for mining chemical collectors.

Phase transfer catalysts enable high-yield thionocarbamate synthesis while resolving catalyst recovery difficulties in aqueous phases.

Controlling thioester impurities in 3-mercaptopropionic acid prevents color deterioration and viscosity increases, ensuring high-quality polyurethane resins.

Thioacetal adducts stabilize 3-methylthiopropionaldehyde, preventing oligomerization and reducing methyl mercaptan volatility.

A closed-loop process recycles hydrogen sulfide and unreacted alkyl mercaptan to enhance yield.

Branched C10 mercaptans and sulfides act as ore collectors to recover metals while eliminating strong odors from traditional linear compounds.

Segmenting synthesis into pre-acetylated intermediates eliminates protection steps, reducing preparation costs and time.

Synthesizing discrete polyethylene glycol compounds with predetermined ethylene oxide unit counts using convergent polymerization methods.

Sequential catalytic stages and unreacted material recirculation minimize thioether by-products while maximizing mercaptan yield.

Bis(hydroxyalkyl)mercaptosuccinates form reversible disulfide linkages in biocompatible polymers.

Deprotecting thioesters generates functional thiols for polymer coupling, expanding the range of available functional groups without isolating intermediates.

Sulfonium salt reagents achieve greater than 97% alpha-isomer selectivity, eliminating difficult chromatographic separation steps.

A probucol prodrug introduces a hydrophilic segment to enhance solubility and metabolic conversion rates.

Azeotropic distillation reduces methyl mercaptan water content below 1500 ppm without forming dimethyl sulfide byproducts.

CoMo catalysis converts dimethyl and diethyl sulfides to methyl ethyl sulfide while suppressing mercaptan byproducts.

Mono-alkyl phenol compounds enhance olefin conversion to thiol and sulfide products via radical initiation mechanisms.

Microchannel reactor replaces hazardous acid reflux to resolve equipment corrosion, achieving stable 85% yield for industrial production.

Zirconia-supported molybdenum and potassium catalyst converts carbon monoxide to methyl mercaptan while suppressing parasitic carbon dioxide production.

Replacing stirred tanks with a zeolite fixed bed reactor boosts ethylene oxide conversion while suppressing thiodiglycol side products.

Dithiothreitol reduction of di-N-acetylcystine dimethylester yields high enantiomeric purity without chromatography.

N-carboxylation of 2-aminobutyrolactone with carbon dioxide increases methionine yield four-fold while simplifying purification.