US 11,142,513 B2 · Method for simultaneously preparing 2-ethoxyphenol and 1,3-benzodioxolane-2-one

Abstract

The present invention belongs to the field of organic chemical synthesis, and provides a method for simultaneously preparing 2-ethoxyphenol and 1,3-benzodioxol-2-one. In the present invention, catechol and diethyl carbonate are subjected to a transesterification reaction under the action of a catalyst to obtain 2-ethoxyphenol and 1,3-benzodioxol-2-one. In the present invention, the combined selectivity of 2-ethoxyphenol and 1,3-benzodioxol-2-one can reach 97%. The method has the advantages of high conversion rate, high selectivity, high economic benefit, environmental friendliness and the like.

Claims15

Dependent claims

A method for preparing 2-ethoxyphenol and 1,3-benzodioxol-2-one, comprising the following steps:

performing the transesterification reaction of catechol and diethyl carbonate under the action of a catalyst to obtain 2-ethoxyphenol and 1,3-benzodioxol-2-one.

Dependencies are inferred from the claim text.

Facts

Application

17/028,290Filed 22 Sep 2020

Priority

CN 202010113693.024 Feb 2020

Published

US 2021/0261517 A126 Aug 2021

Granted

12 Oct 2021

Term ends

Not estimatedThe source records don’t support an estimate.

Classification4 codes

C07D 317/64
With hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals,…:…
C07C 41/16
Preparation of ethers: by reaction of esters of mineral or organic acids with hydroxy or O-metal groups
C07D
Heterocyclic compounds
C07C
Acyclic or carbocyclic compounds

Method for simultaneously preparing 2-ethoxyphenol and 1,3-benzodioxolane-2-one

Life of this patent

Method for simultaneously preparing 2-ethoxyphenol and 1,3-benzodioxolane-2-one

Life of this patent

Abstract

Claims15