25655

“

H-C=0

H-C—OH I

HO-C-H

!

H-C—OH I

CH_?OH

D-g!ukoz*

H-r-C—OH

c=o

K

HO—C—H -—-

I

H-C—OH

H-C—OH I

CHjOH

H-C—OH C— OH

HO-C-H

I

OH

H-C !

H—ę—OH CH_?OH

H

I

C—OH

I

c—OH

1

HO-C

I

H-C—OH

I

H-C-OH

I

CH₂0H

2.ł-«c<łiol

H-

H-C-0

K

HO-C-H

I

HO—C—H I

H-C-OH

I

H-C-OH

!

ch₂oh

H

I

H-C—Oli I

c-tlO

h4-

I

H-C—OH

I

H-C—OH

-OH

Rys. 5.21. Izomeryzacja cukrów w środowisku alkalicznym

labie 4.12. Volalilc rcactton prodwcis obtained From fructose by an alkali dcgradaiton (pif 8 10)

Acetic acid

Hydroxyacetone l -Hydroxy-2-butanone

3- Hydroxy-2-bulanone

4- Hydroxy-2-butanone

Furfuryl alcohol

5- Methyl-2-furftiryl alcohol

2,5-Dimethy 1-4 -hydroxy-3-( 2 H)- furanone

2- Hydroxy-3-methyl-2-cyclopenten-1 -one

3.4- DimethyI-2-hydroxy-2-cyclopenten-l-onc

3.5- Dimethyl-2-hydroxy-2-cyclopewen-1 -one

3-    Ethyl-2-hydroxy-2-cyclopencen-1 -one

y-Butyrolactonc