Ketoses in aqueous solution

Another common monosaccharide is D-fructose (6), a ketose. In aqueous solution, D-fructose also undergoes mutarotation to produce a complex equilibrium mixture of the acyclic form 6 (< 1%), the five-membered hemiacetals 7 (31%) and 8 (9%), which are called furanoses, and the cyclic pyranoses 9 (57%) and 10 (3%) this mixture exhibits an [a] = -92° (Scheme 23.1). 

Table 4.6. Equilibrium composition of aldoses and ketoses in aqueous solution Compound T (°C) a-Pyranose p-Pyranose a-Furanose p-Furanose...

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See also in sourсe #XX -- [ ]

See also in sourсe #XX -- [ , ]

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