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Cellulose hydroxy alkyl ether

The rate of acetylation of 0-(hydrox3Tnethyl)cellulose (and other hydroxy compounds) by mixtures of carboxylic acids and their anhydrides has been found to increase greatly in the presence of trifluoroacetic acid. The acceleration is very much less with mono- and tri-chloroacetic acids, presumably because they form unsymmetrical anhydrides which are less effective acylating agents than acyl trifluoroacetates. The exceptional acylating power of the latter anhydrides is shown by their use in the synthesis of alkyl aryl ketones from polyalkylbenzenes, phenyl ethers, furan, and thiophene under mild conditions. The principle has been extended to include acids... [Pg.68]


See other pages where Cellulose hydroxy alkyl ether is mentioned: [Pg.366]    [Pg.271]    [Pg.343]    [Pg.187]    [Pg.712]    [Pg.353]    [Pg.160]    [Pg.265]   
See also in sourсe #XX -- [ Pg.1096 ]




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1- Alkyl-2-hydroxy

Alkyl-cellulose

Cellulose alkyl ethers

Cellulose alkylation

Cellulose ethers

Cellulose hydroxy alkylated

Ether cellulose ethers

Ethers cellulosics

Hydroxy alkylation

Hydroxy ethers

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