New iodination of cellulose in phosphoric acid

被引：10

作者：

Pagliaro, M ^{[1
]}

机构：

[1] CNR, Ist Chim & Tecnol Prod Nat, I-90146 Palermo, Italy

来源：

CARBOHYDRATE RESEARCH | 1999年 / 315卷 / 3-4期

关键词：

cellulose; ester; autocatalytic; iodination; phosphoric acid;

D O I：

10.1016/S0008-6215(99)00014-2

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Microcrystalline cellulose was dissolved at ambient temperature in 85% H3PO4, and KIO3 was added together with KI to the solution thereby obtained. After 24 h, a white product was isolated by adding cold ethanol. The product has a large specific weight and a high content of iodine. On the basis of IR and NMR spectroscopy data, it is suggested that the polymer is the cellulose triester of the unstable acid HOI. A reaction mechanism for the ester formation is proposed. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：350 / 353

页数：4

共 17 条

[1] IODINATION AND IODO-COMPOUNDS .3. IODINATION OF SOME AROMATIC NITRO-COMPOUNDS WITH IODINE IN 20 PERCENT OLEUM [J].

AROTSKY, J ;

BUTLER, R ;

DARBY, AC .

JOURNAL OF THE CHEMICAL SOCIETY C-ORGANIC, 1970, (10) :1480-&

[2] DICARBOXY-STARCH BY SODIUM-HYPOCHLORITE BROMIDE OXIDATION AND ITS CALCIUM-BINDING PROPERTIES [J].

BESEMER, AC ;

VANBEKKUM, H .

STARCH-STARKE, 1994, 46 (03) :95-101

[3]

Besemer AC, 1993, THESIS DELFT U TECHN

[4] Autocatalytic oxidation of primary hydroxyl functions in glucans with nitrogen oxides [J].

de Nooy, AEJ ;

Pagliaro, M ;

van Bekkum, H ;

Besemer, AC .

CARBOHYDRATE RESEARCH, 1997, 304 (02) :117-123

[5] Evidence for cyclodextrin dioxiranes [J].

Deary, ME ;

Davies, DM .

CARBOHYDRATE RESEARCH, 1998, 309 (01) :17-29

[6]

Engelhardt J, 1995, CARBOHYDR EUR, V12, P5

[7]

Gray P., 1990, CHEM OSCILLATIONS IN, P10

[8]

GREEN JW, 1980, CARBOHYDRATES, V1, P1106

[9]

HAY G. W., 1965, METHOD CARBOHYD CHEM, V5, P357

[10]

MARCH J, 1985, ADV ORG CHEM, P447

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