Showing papers by "John A. Hyatt published in 1991"
TL;DR: A series of cellulose acetates labeled at the carbonyl carbons with carbon-13 was prepared by aqueous acid hydrolysis, metal-catalyzed methanolysis, and acetic acid promoted methanization of 2,3,6-tri-([1- 13 C]acetyl) cellulose as mentioned in this paper.
Abstract: A series of cellulose acetates labeled at the carbonyl carbons with carbon-13 was prepared by aqueous acid hydrolysis, metal-catalyzed methanolysis, and acetic acid promoted methanolysis of 2,3,6-tri-([1- 13 C]acetyl) cellulose A total of 16 carbonyl carbon resonances were identified in the carbon-13 NMR spectra of cellulose acetates prepared by aqueous acid hydrolysis Fewer carbonyl carbon resonances were found in the carbon-13 NMR spectra of the cellulose acetates prepared by metal-catalyzed methanolysis
71 citations
27 citations
TL;DR: In this article, the reaction of certain carbohydrate trifluoromethanesulfonates (triflates) with tetrabutylammonium hydrogensulfate in acetonitrile solution was described.