The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 01, 2019
Filed:
Sep. 25, 2015
Zhejiang Zhuji United Chemicals Co., Ltd, Hangzhou, Zhejiang, CN;
Yehua Su, Zhejiang, CN;
Jieping Shi, Zhejiang, CN;
Jianxin Lu, Zhejiang, CN;
Tianhao Zhang, Zhejiang, CN;
Xiaohua Yu, Zhejiang, CN;
Guoping Cai, Zhejiang, CN;
Bangchi Chen, Zhejiang, CN;
ZHEJIANG ZHUJI UNITED CHEMICALS CO., LTD, Hangzhou, Zhejiang, CN;
Abstract
A preparative method for carboxylic acids is disclosed in the present invention. The method is characterized in that: compounds (II) are reacted in the presence of hydrogen peroxide and base to produce target products (I), as represented by the following reaction scheme: wherein Ris aryl, pyridyl, pyrimidyl, pyridazinyl, pyrazinyl, benzothienyl, benzofuranyl, quinolinyl, isoquinolinyl, thiadiazolyl, Calkyl, Ccycloalkyl, Calkenyl, Calkynyl and hydrogen; Ris alkoxycarbonyl, alkylaminocarbonyl, aminocarbonyl, alkylthiolcarbonyl, cyano, sulfonyl, sulfinyl, carbonyl, aldehyde, carboxyl, nitro, alkyl and hydrogen; Ris alkoxycarbonyl, alkyl amido carbonyl, aminocarbonyl, cyano, sulfonyl, sulfinyl, carbonyl, carboxyl and nitro. The present invention has the following main benefits: cheap and readily available starting materials, safe processes, high yield, good quality, which facilitates industrial production.