Electric Literature of 96-35-5 ,Some common heterocyclic compound, 96-35-5, molecular formula is C3H6O3, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc., below Introduce a new synthetic route.
As a reactive distillation apparatus, an apparatus obtained by connecting a 3-stage packed column to a flask and further providing a refluxing device at the top of the packed column was used. A mixed liquid obtained by mixing 150 g of water with 50 g of the distillate containing more than 98 wt % of methyl glycolate obtained in (3) above was put into the flask. Next, reactive distillation was carried out for 2 hours at normal pressure, maintaining the temperature at the base of the column of the reactive distillation apparatus (i.e. the liquid temperature) at 95 to 97 C. At this time, distillate containing methanol was distilled off. The temperature at the top of the column was 65 C. at the start of the reactive distillation, but had reached 100 C. by the end. [0322] After the reactive distillation had been completed, 114 g of an aqueous solution containing 36.1 wt % of glycolic acid was recovered from the flask. The yield of glycolic acid relative to the methyl glycolate was 100%. Regarding impurities, formaldehyde and chlorine compounds were not detected, and 20 ppm of oxalic acid and 76 ppm of ethylene glycol were detected.
In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles. 96-35-5, Methyl 2-hydroxyacetate, other downstream synthetic routes, hurry up and to see.
Reference:
Patent; Hayashi, Toshio; Baba, Hideyuki; US2004/138409; (2004); A1;,
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