Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Purdie’s reagent

Methylation of free hydroxyl groups by means of Purdie s reagents usually proceeds smoothly,176 without occurrence of desulfonylation.220 Thus, by treatment20 of methyl 2,3-di-0-methyl-4-0-phenylsulfonyl-/8-D-glucoside with silver oxide plus boiling methyl iodide under reflux, the 2,3,6-trimethyl ether was obtained. However, although methyl... [Pg.152]

The acetylated, degraded polysaccharide of C. ocellatus thus obtained was deacetylated and methylated by dimethyl sulfate and alkali and then by Purdie s reagents (silver oxide and methyl iodide). Methanolysis of... [Pg.336]

In the course of the synthesis of 2-amino-2-deoxy-3,4-di-0-methyl-D-glucose, the 3-methyl ether of methyl 2-acetamido-2-deoxy-6-0-trityl-a-D-glucopyranoside was obtained as a secondary product on methylation with Purdie s reagents. Elimination of the trityl group afforded the same glycoside as that obtained by Neuberger. [Pg.192]

A 4-methyl ether of a 2-amino-2-deoxy-D-glucose derivative was first obtained as a by-product in the methylation of methyl 2-acetamido-2-deoxy-6-O-trityl-a-n-glucopyranoside with Purdie s reagents. ... [Pg.192]

See other pages where Purdie’s reagent is mentioned: [Pg.152]    [Pg.210]    [Pg.66]    [Pg.118]    [Pg.122]    [Pg.195]    [Pg.195]    [Pg.199]    [Pg.55]    [Pg.383]    [Pg.210]    [Pg.111]    [Pg.152]    [Pg.210]    [Pg.66]    [Pg.118]    [Pg.122]    [Pg.195]    [Pg.195]    [Pg.199]    [Pg.55]    [Pg.383]    [Pg.210]    [Pg.111]    [Pg.139]    [Pg.110]    [Pg.180]    [Pg.165]    [Pg.167]    [Pg.251]    [Pg.310]   
See also in sourсe #XX -- [ Pg.102 ]

See also in sourсe #XX -- [ Pg.370 ]



SEARCH



Purdy

© 2024 chempedia.info