N-Vinyl acetamide

The nonionic monomer can be acrylamide, N,N-dimethylacrylamide, N-vinyl-2-pyrrolidone, N-vinyl acetamide, or dimethylamino ethyl methacrylate. Ionic monomers are AMPS, sodium vinyl sulfonate, and vinylbenzene sulfonate. The terpolymer should have a molecular weight between 200,000 to 1,000,000 Dalton. 

N-vinyl acetamide, or dimethylamino ethyl methacrylate, 2-acrylamido-2-methylpropane sulfonic acid, sodium vinyl sulfonate, and vinylbenzene sulfonate... 

A conversion degree of more than 95 % was achieved by the poly(N-vinyl succin-imide) and poly(N-vinyl acetamide) methods, while by the poly(N-vinyl carbamate) method essentially pure poly(vinylamine) was obtained. 

C6H11CIO 2,3-dimethyl butanoyl chloride 51760-90-8 408.15 35.134 1,2 8122 C6H11NO N-ethyl-N-vinyl acetamide 3195-79-7 474.25 41.416 2... 

Poly(2-vinyl pyridine) Poly(N-vinyl acetamide) SBR... 

Adhesives for vinyls iV-Propyl-N-vinyl acetamide Britain 1,031,444 1966 Monsanto... 

Apparently there is no tendency to form an N-vinyl acetamide in this instance. 

Modified amino acids such as N-acyl-dehydroalanine polymers and copolymers with N-vinyl-N-methyl acetamide seem to be particularly effective [396]. The crystallization kinetics in the presence of polyvinylpyrrolidone and tyrosine have been tested by time-resolved experiments [981]. An influence is evident on the particle size distribution of the hydrate [1433]. 

Alkyl enamides, such as N-(1 -tert-bulyl-viriyl)-acelamide 88 and N-(l-adaman-tyl-vinyl)-acetamide 89, can also be hydrogenated in high enantioselectivity (>99% ee) and activity (TON 5000 TOF >625 h ) with Rh-Me-DuPhos [19]. Remarkably, these bulky alkyl enamides are reduced with the opposite sense of induction, a phenomenon also observed when the bisphospholane Di Square P 63 was applied [87 b]. A computational modeling study by Landis and Feldgus suggested that the reduction of a-alkyl and a-arylenamides involves different coordination pathways [93, 158]. 

Padwa and Kuethe have also used vinylogous Pummerer reactions of amido sulfoxides in the preparation of nitrogen-containing heterocycles. Vinyl amido sulfoxide (224) underwent an additive Pummerer reaction, on treatment with trifluoroacetic anhydride, to yield product 226 (Scheme 57).123 The a-thiocarbo-cation 225 generated from the Pummerer reaction of N-methyl-N-phenyl-2-[2-(toluene-4-sulfinyl)phenyl]acetamide (224) underwent a Friedel-Crafts reaction at the y-carbon with the tethered aromatic ring. Reductive removal of the... 

Acetylation of horseradish peroxidase increased its half-life at 65°C fivefold and made it more tolerant to dimethyl-formamide, tetrahydrofuran, and methanol.91 Chymotrypsin is more active in organic media when immobilized than when it is just suspended.92 The selectivity of enzymes in organic media can vary with the solvent.93 The transesterification of racemic 1-phenylethanol with vinyl butyrate using subtilisin gave the best enantioselectivity in dioxane (61%) and the least in N-metby 1 acetamide (3%). Pretreatment of a lipase from Candida rugosa in isopropyl alcohol increased the activity slightly and the enantioselectivity by more than tenfold in the resolution of ester 9.5.94 The R isomer had 93.1% enantiomeric excess (ee) the S isomer 94.4%. 

Ethanoic acid, ethenyl ester. See Vinyl acetate Ethanoic anhydrate. See Acetic anhydride Ethanol. See Alcohol N-Ethanolacetamide. See Acetamide MEA Ethanolamide. See Acetamide Ethanolamine... 

Tetramethyidichlorodisilethylene 1,1,3,3-Tetramethyldisiloxane Tetra-n-propoxysilane N-(Triethoxysilylpropyl) urea Trimethylsilyl acetamide Trimethylsilyinitrile y-Ureidopropyltrimethoxysilane Vinyidimethylchlorosilane Vinyl methyidichlorosilane Vinylmethyidiethoxysilane Vinyltriacetoxy silane... 

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