D-Gluconic acid, .gamma.-lactone synthesis
- Product Name:D-Gluconic acid, .gamma.-lactone
- CAS Number:1198-69-2
- Molecular formula:C6H10O6
- Molecular Weight:178.14
Yield:-
Reaction Conditions:
in water at 112 - 124; for 2 h;Sparging with nitrogen;
Steps:
2
EXAMPLE 2 A 50 wt % solution of D-gluconic acid in water (7.6 g) was spargedwith a stream of dry nitrogen. With continued sparging, the solution washeated to 112 to 118 °C for 1 hour and then 118 to 124 °C for 1 hour.Upon cooling to room temperature, the syrup solidified to a glassy solidthat 1H and 13C NMR indicated to be a 2:1 mixture of D-glucono-1,4-lactone and D-glucono-1,5-lactone.
References:
E.I. DUPONT DE NEMOURS AND COMPANY WO2006/5070, 2006, A1 Location in patent:Page/Page column 14
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