Calcium Carbonate → zilascorb

HRID 1087585Notes

Reaction equation

HRID 1087585 reaction equation
[CH2:1]1[O:5][CH:4]([C:6]2[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=2)[O:3][C@@H:2]1[C@H:12]1[O:17][C:15](=[O:16])[C:14]([OH:18])=[C:13]1[OH:19].C(=O)([O-])[O-].[Ca+2:24].O=C1O[C@H]([C@H](CO)O)C(O)=C1O>O>[Ca:24].[CH2:1]1[O:5][CH:4]([C:6]2[CH:7]=[CH:8][CH:9]=[CH:10][CH:11]=2)[O:3][C@@H:2]1[C@H:12]1[O:17][C:15](=[O:16])[C:14]([OH:18])=[C:13]1[OH:19]

Participants

6

Reactant 3

HCID 10112Calcium CarbonateHCID 54670067L-Ascorbic AcidHCID 54682464zilascorb

Product 2

HCID 5460341CalciumHCID 54682464zilascorbYield 98.5%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent2×

Procedure

5,6-O-Benzylidene-L-ascorbic acid (13.2 g) was suspended in water (300 ml), to which was then added calcium carbonate (5 g), whereby the ascorbic acid was dissolved in water. The resulting aqueous solution was freeze-dried to give a calcium salt of 5,6-O-benzylidene-L-ascorbic acid (yield 13 g). This product was a white powdery substance which was readily soluble in water and decomposed near 200° C.

Workup

  1. customThe resulting aqueous solution was freeze-dried

Sources & evidence

ORD record
ord-78d241d3604c4f41835c6aec1ab02437
Source dataset
uspto-grants-1991_07
Patent number
US05036103

Reaction notes

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