. "RIV/60461373:22310/07:00018752" . "419820" . "R" . "Bystro\u0148, Tom\u00E1\u0161" . . "Elektrochemick\u00E1 synt\u00E9za 4 methoxybenzaldehydu; vliv z\u00E1kladn\u00EDho elektrolytu na kinetiku a selektivitu reakce." . . "Elektrochemick\u00E1 synt\u00E9za 4 methoxybenzaldehydu; vliv z\u00E1kladn\u00EDho elektrolytu na kinetiku a selektivitu reakce."@cs . . . "[902BCA8FCB3F]" . "RIV/60461373:22310/07:00018752!RIV08-MSM-22310___" . . "1"^^ . . "4-Methoxybenzaldehyd (4-MBA) pat\u0159\u00ED do skupiny substituovan\u00FDch aromatick\u00FDch aldehyd\u016F, je\u017E jsou v\u00FDznamn\u00FDmi meziprodukty p\u0159i v\u00FDrob\u011B \u0159ady speci\u00E1ln\u00EDch chemik\u00E1li\u00ED, jako jsou l\u00E9\u010Diva, barviva \u010Di slo\u017Eky parf\u00E9m\u016F. Nejv\u00FDhodn\u011Bj\u0161\u00EDm zp\u016Fsobem produkce 4 MBA se dnes jev\u00ED proces zalo\u017Een\u00FD na elektrochemick\u00E9 methoxylaci 4 methylanisolu (4-MA). Anodick\u00E1 oxidace 4-MA v prost\u0159ed\u00ED methanolu vede v prvn\u00EDm stupni na 4 methoxybenzylmethyl ether (4-MBME). Ve druh\u00E9m stupni vznik\u00E1 4 methoxybenzaldehyd dimethylacetal (4-MBA DMA) (1). N\u00E1sledn\u00E1 kysel\u00E1 hydrol\u00FDza 4 MBA DMA pak poskytuje po\u017Eadovan\u00FD 4-MBA. Zm\u00EDn\u011Bn\u00FD proces je charakteristick\u00FD vysokou selektivitou oxidace 4 MA na 4 MBA. Mezi jeho nesporn\u00E9 v\u00FDhody pat\u0159\u00ED rovn\u011B\u017E mo\u017Enost realizace kontinu\u00E1ln\u00EDho uspo\u0159\u00E1d\u00E1n\u00ED technologie. D\u016Fle\u017Eit\u00FDm parametrem, kter\u00FD ovliv\u0148uje pr\u016Fb\u011Bh elektrochemick\u00E9ho procesu je charakter z\u00E1kladn\u00EDho elektrolytu. Ten byl rovn\u011B\u017E t\u00E9matem p\u0159edkl\u00E1dan\u00E9 pr\u00E1ce. Kinetika methoxyla\u010Dn\u00EDch reakc\u00ED byla studov\u00E1na v klasick\u00E9m 3-elektrodov\u00E9m uspo\u0159\u00E1d\u00E1n\u00ED. Jako pracovn\u00ED byla pou\u017Eita"@cs . "4-Methoxybenzaldehyd (4-MBA) pat\u0159\u00ED do skupiny substituovan\u00FDch aromatick\u00FDch aldehyd\u016F, je\u017E jsou v\u00FDznamn\u00FDmi meziprodukty p\u0159i v\u00FDrob\u011B \u0159ady speci\u00E1ln\u00EDch chemik\u00E1li\u00ED, jako jsou l\u00E9\u010Diva, barviva \u010Di slo\u017Eky parf\u00E9m\u016F. Nejv\u00FDhodn\u011Bj\u0161\u00EDm zp\u016Fsobem produkce 4 MBA se dnes jev\u00ED proces zalo\u017Een\u00FD na elektrochemick\u00E9 methoxylaci 4 methylanisolu (4-MA). Anodick\u00E1 oxidace 4-MA v prost\u0159ed\u00ED methanolu vede v prvn\u00EDm stupni na 4 methoxybenzylmethyl ether (4-MBME). Ve druh\u00E9m stupni vznik\u00E1 4 methoxybenzaldehyd dimethylacetal (4-MBA DMA) (1). N\u00E1sledn\u00E1 kysel\u00E1 hydrol\u00FDza 4 MBA DMA pak poskytuje po\u017Eadovan\u00FD 4-MBA. Zm\u00EDn\u011Bn\u00FD proces je charakteristick\u00FD vysokou selektivitou oxidace 4 MA na 4 MBA. Mezi jeho nesporn\u00E9 v\u00FDhody pat\u0159\u00ED rovn\u011B\u017E mo\u017Enost realizace kontinu\u00E1ln\u00EDho uspo\u0159\u00E1d\u00E1n\u00ED technologie. D\u016Fle\u017Eit\u00FDm parametrem, kter\u00FD ovliv\u0148uje pr\u016Fb\u011Bh elektrochemick\u00E9ho procesu je charakter z\u00E1kladn\u00EDho elektrolytu. Ten byl rovn\u011B\u017E t\u00E9matem p\u0159edkl\u00E1dan\u00E9 pr\u00E1ce. Kinetika methoxyla\u010Dn\u00EDch reakc\u00ED byla studov\u00E1na v klasick\u00E9m 3-elektrodov\u00E9m uspo\u0159\u00E1d\u00E1n\u00ED. Jako pracovn\u00ED byla pou\u017Eita" . "2"^^ . "Electrochemical synthesis of 4-methoxybenzaldehyde; Effect of supporting electrolyte on kinetics and selectivity of the reaction."@en . . . "5-6" . . "59. zjazd chemikov" . "Bratislava" . "Elektrochemick\u00E1 synt\u00E9za 4 methoxybenzaldehydu; vliv z\u00E1kladn\u00EDho elektrolytu na kinetiku a selektivitu reakce."@cs . . . . "22310" . "Electrochemical methoxylation; glassy carbon; 4-methylanisole; 4-methoxytoluene; 4 methoxybenzylmethyl ether; 4 methoxybenzaldehyde; reaction mechanism"@en . . "2"^^ . . "4-Methoxybenzaldehyde (4-MBA) belongs to a group of substituted aromatic aldehydes that are important intermediates in production of specialty and fine chemicals. As a most convenient way of 4 MBA production appears to be electrochemical methoxylation of 4 methylanisole (4 MA). This process is characterized by high selectivity of the oxidation for 4-MBA. An important parameter influencing electrochemical process is a type of used supporting electrolyte. Methoxylation kinetics was studied in standard three electrode arrangement with roatating disc electrode made of polished glassy carbon. Selectivity of the process for 4 MBA was determined from batch electrolysis experiments. Kinetics of 4 MA oxidation in KF methanol and NaClO4 methanol electrolytes was determined from pseudostationary voltammetric curves and described by means of Tafel and Arrhenius equation. Menationed systems bahave in totaly different ways. NaClO4 is electrochemically inactive whereas KF is anodically oxidized in the electrode"@en . "Bouzek, Karel" . . "1336-7242" . "Slovensk\u00E1 chemick\u00E1 spolo\u010Dnos\u0165 pri SAV" . . "Electrochemical synthesis of 4-methoxybenzaldehyde; Effect of supporting electrolyte on kinetics and selectivity of the reaction."@en . . "Elektrochemick\u00E1 synt\u00E9za 4 methoxybenzaldehydu; vliv z\u00E1kladn\u00EDho elektrolytu na kinetiku a selektivitu reakce." .