Phase transfer catalysis (PTC): search for alternative organic solvents, even environmentally benign

Autor:	Dario Landini, Angelamaria Maia
Rok vydání:	2003
Předmět:	chemistry.chemical_classification Ketone Process Chemistry and Technology Ether Toluene Catalysis chemistry.chemical_compound chemistry Chlorobenzene Organic chemistry Physical and Theoretical Chemistry Solvent effects Dimethyl carbonate Aliphatic compound
Zdroj:	Journal of Molecular Catalysis A: Chemical. :235-243
ISSN:	1381-1169
DOI:	10.1016/s1381-1169(03)00304-2
Popis:	The use of aliphatic esters, ethers and ketones such as dimethyl carbonate (DMC), methyl-tert-amyl ether (MTAE), 5-methyl-2-hexanone (MIAK), 4-methyl-2-pentanone (MIBK) as an alternative to traditional solvents (toluene, chlorobenzene, etc.) was explored as a strategy for performing phase transfer catalyzed reactions in organic media, even environmentally benign. Experimental data show that in these media the partition of the catalyst in the organic phase is comparable or higher than that in chlorobenzene, especially in the case of scarcely lipophilic methyltributylammonium (3) or tetrabutylammonium (4) salts (Eq. (1)). Anion reactivity under PTC conditions increases with decreasing the solvent polarity, in the order: ketone
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6e6be5a78801d4a583dfa80f4582628f https://doi.org/10.1016/s1381-1169(03)00304-2 Zobrazit plný text záznamu Full Text from ScienceDirect