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US 10,829,482 B2Granted
Method for producing glyceric acid ester
AssigneeKao Corporation
InventorTakashi Aoki
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AssigneeKao Corporation
InventorTakashi Aoki
Estimating the term…
The present invention is to provide a method of producing a glyceric acid ester which is easy for production and high in yield, and in which a pyridine to be used for the reaction is easily reused. Provided is a method of producing a compound represented by the following formula (II), including a step of oxidatively esterifying Compound A represented by the following formula (I) with Compound B selected from an organic nitroxyl radical, an N-hydroxy form thereof, and a salt containing an oxo ammonium cation of them, and an oxidizing agent in the presence of a pyridine having an alkyl substituent, wherein the use amount of Compound B is 0.0001 or more and 0.1 or less in terms of a molar ratio relative to Compound A: wherein, in the formulae (I) and (II), R1 and R2 each independently represent a hydrogen atom or a monovalent hydrocarbon group, or R1 and R2 are bonded to each other to form a divalent hydrocarbon group for constituting a ring structure.
A method of producing a compound represented by the following formula (II), comprising a step of oxidatively esterifying Compound A, Compound A being represented by the following formula (I), with Compound B, Compound B being selected from an organic nitroxyl radical, an N-hydroxy form thereof, and a salt containing an oxo ammonium cation of them, and an oxidizing agent, and in the presence of a pyridine having an alkyl substituent, wherein the molar ratio of Compound B to Compound A (B:A) used in the oxidative esterification is in the range from 0.0001:1 through 0.1:1:
Dependencies are inferred from the claim text.