On the one hand, transesterification of cellulose with corresponding methyl esters in DMSO/DBU/CO 2 is appropriate to synthesize derivatives possessing only one phenolic hydroxyl group, e.g.

and on the basis of this criterion many X-ray structure investigations have prompted the conclusion that a free hydroxyl group in crystalline hydroxy compounds will be rare 1.

Fujian–Taiwan Science and Technology Cooperation Base of Biomedical Materials and Tissue Engineering, Engineering Research Center of Industrial Biocatalysis, Fujian Provincial Key Laboratory of ...