An efficient palladium-cocatalyst system for vinylation of unsaturated carboxylic acid has been exploited,among which aliphatic amines(ALA)are firstly used as cocatalysts.
Phenoxyacetophenone could be prepared from potassium phenolate and m bromoacetophenone via Ullmann reaction catalyzed by copper acetate in high yields.
After ethanol extracted hepaticglycogen, it was identified by indic colorific mensuration and quantified with anthrone mensuration.Finally, experimentative design was bringed forward.
Using the method of latex polymerization,poly vinyl acetate was synhesized with PVA as protective colloid,which was crosslinked with formylamine-group containing component.
METHODS The gel was prepared by taking mafenide acetate and dyclonine hydrochloride as main components,carboxymethylcellulose sodium and glycerol as base material.
An incorporative process in cooking with bleaching of cotton linter pulp with peracetic acid was optimized with orthogonal test and single-factor tests.