Modifications in the nitric acid oxidation of D-mannose: X-ray crystal structure of N,N'-dimethyl D-mannaramide.
Carbohydr Res
; 376: 29-36, 2013 Jul 19.
Article
em En
| MEDLINE
| ID: mdl-23743360
ABSTRACT
Nitric acid oxidation of D-mannose was carried out under an oxygen atmosphere using a computer controlled reactor. The process represents a catalytic oxidation of D-mannose with oxygen as the terminal oxidant. The crude oxidation product was esterified with methanolic HCl and the esterified product directly converted to crystalline N,N'-dimethyl-D-mannaramide with methylamine. Treatment of the diamide in aqueous sodium hydroxide gave solid disodium D-mannarate. The X-ray crystal structure of N,N'-dimethyl-D-mannaramide was determined as a model for the repeating D-mannaramide units of stereoregular poly(alkylene-D-mannaramides). Disodium D-mannarate was prepared as a precursor of esterified D-mannaric acid for use as a reactive diacid monomer to prepare poly-D-mannaramides.
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1
Base de dados:
MEDLINE
Assunto principal:
Ácido Nítrico
/
Manose
Idioma:
En
Ano de publicação:
2013
Tipo de documento:
Article