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New coupling reagents for homogeneous esterification of cellulose

Merima Hasani (Institutionen för kemi- och bioteknik, Organisk kemi) ; Gunnar Westman (Institutionen för kemi- och bioteknik, Organisk kemi)
Cellulose (0969-0239). Vol. 14 (2007), 4, p. 347-356.
[Artikel, refereegranskad vetenskaplig]

A group of known, but in cellulose chemistry new coupling reagents for homogeneous esterification has been investigated: 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methyl-morpholinium chloride, N-methyl-2-bromopyridinium iodide, N-methyl-2-chloropyridinium iodide, and N-methyl-2-bromopyridinium tosylate. In order to study their ability to activate carboxylic acids in esterifications of cellulose they have been employed in synthesis of cellulose adamantate esters. Their effectiveness has been estimated in terms of degree of substitution of resulting esters and compared to that obtained with the commonly used N,N'-carbonyldiimidazole.



Denna post skapades 2008-01-08. Senast ändrad 2016-02-01.
CPL Pubid: 64850

 

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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Organisk kemi (2006-2014)

Ämnesområden

Kemi

Chalmers infrastruktur

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Chemical modification of cellulose-new possibilities of some classical routes