Biomasa – obnovljiva sirovina za organske kemikalije (“Bijela kemija”)

Limited resources compel us to turn to renewable sources, new and old, that are capable of supporting sustainable development of the human society, and satisfying the demand in energy and materials. Plant life is far from being depleted; while its potential in supporting sustainable and renewable feedstock for organic material is great. This review is devoted to the use of biomass in production of basic organic chemicals, and to the main technological directions of biomass processing. These processes mainly involve transformation of cellulose and carbohydrates into final products by chemical or fermentation technologies. Some processes are already applied in industry, while their field of application is permanently growing. A number of chemical products can be isolated from plants directly including genetically modified species. Progress in chemical technology and biotechnology enables an almost 50–70 % substitution of oil feedstock with biomass.Ograničeni prirodni resursi prisiljavaju nas da se okrenemo obnovljivim izvorima, starim i novim, koji mogu osigurati održivost ljudske zajednice i zadovoljiti naše potrebe za energijom i materijalima. Biljni svijet ima ogroman potencijal kao sirovina za proizvodnju organskog materijala. Ovaj pregled posvećen je upotrebi biomase za proizvodnju nekih osnovnih organskih kemikalija te glavnim smjerovima razvitka tehnologije za preradu biomase. To su uglavnom procesi koji pretvaraju celulozu i ugljikohidrate u finalne proizvode kemijskim ili fermentacijskim procesima. Neki se procesi već primjenjuju u industriji, međutim njihov opseg primjene stalno raste. Brojni kemijski proizvodi mogu se izravno izdvojiti iz biljaka, uključujući i genetski modificirane vrste. Napredak u kemijskoj tehnologiji i biotehnologiji omogućuje gotovo 50-70 postotnu zamjenu nafte kao sirovine biomasom

Biomasa – obnovljiva sirovina za organske kemikalije (“Bijela kemija”)

Limited resources compel us to turn to renewable sources, new and old, that are capable of supporting sustainable development of the human society, and satisfying the demand in energy and materials. Plant life is far from being depleted; while its potential in supporting sustainable and renewable feedstock for organic material is great. This review is devoted to the use of biomass in production of basic organic chemicals, and to the main technological directions of biomass processing. These processes mainly involve transformation of cellulose and carbohydrates into final products by chemical or fermentation technologies. Some processes are already applied in industry, while their field of application is permanently growing. A number of chemical products can be isolated from plants directly including genetically modified species. Progress in chemical technology and biotechnology enables an almost 50–70 % substitution of oil feedstock with biomass.Ograničeni prirodni resursi prisiljavaju nas da se okrenemo obnovljivim izvorima, starim i novim, koji mogu osigurati održivost ljudske zajednice i zadovoljiti naše potrebe za energijom i materijalima. Biljni svijet ima ogroman potencijal kao sirovina za proizvodnju organskog materijala. Ovaj pregled posvećen je upotrebi biomase za proizvodnju nekih osnovnih organskih kemikalija te glavnim smjerovima razvitka tehnologije za preradu biomase. To su uglavnom procesi koji pretvaraju celulozu i ugljikohidrate u finalne proizvode kemijskim ili fermentacijskim procesima. Neki se procesi već primjenjuju u industriji, međutim njihov opseg primjene stalno raste. Brojni kemijski proizvodi mogu se izravno izdvojiti iz biljaka, uključujući i genetski modificirane vrste. Napredak u kemijskoj tehnologiji i biotehnologiji omogućuje gotovo 50-70 postotnu zamjenu nafte kao sirovine biomasom

A practical route to fluoroalkyl- and fluoroarylamines by base-catalyzed [1,3]-proton shift reaction

The base-catalyzed [1,3]-proton shift reaction is shown to be an efficient general approach to fluoroalkyl and fluoroaryl amines starting from appropriate carbonyl compounds and benzylamine. The base-catalyzed [1,3]-proton shift reaction is shown to be a convenient general method for preparation of primary fluoroalkyl and fluoroaryl amines starting from appropriate carbonyl compounds and benzylamine

Transamination of fluorinated β-keto carboxylic esters. A biomimetic approach to β-polyfluoroalkyl-β-amino acids.

The base-catalyzed isomerization of N-benzylimines (or enamines) of β-polyfluoroalkyl-β-ketocarboxylic esters cleanly affords the N-benzylidene derivatives of β-polyfluoro-β-aminocarboxylic esters which are hydrolyzed to corresponding amino acids in high overall yields