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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.:

US 8809590 B1

PDFFull Text
Expired
Date of Patent:
Aug. 19, 2014

Filed:

Jun. 21, 2012

Method for industrially preparing nitrogen substituted amino-5,6,7,8-tetrahydronaphthol

Applicants:

Qingguo Meng, Shandong, CN;

Mina Yang, Shandong, CN;

Tao Wang, Shandong, CN;

Qilin Wang, Shandong, CN;

Jun LI, Beijing, CN;

Zheng Ruan, Shandong, CN;

Inventors:

Qingguo Meng, Shandong, CN;

Mina Yang, Shandong, CN;

Tao Wang, Shandong, CN;

Qilin Wang, Shandong, CN;

Jun Li, Beijing, CN;

Zheng Ruan, Shandong, CN;

Assignee:

Shan Dong Luye Pharmaceutical Co., Ltd., Shandong, CN;

Attorney:

Osha Liang LLP

Primary Examiner:

Andrew D Kosar

Assistant Examiner:

John S Kenyon

Int. Cl.
CPC ...
C07C 211/38 (2006.01); C07C 215/46 (2006.01); C07C 213/00 (2006.01); C07D 333/20 (2006.01); C07C 217/52 (2006.01); C07D 213/36 (2006.01); C07C 213/08 (2006.01);
U.S. Cl.
CPC ...
C07D 333/20 (2013.01); C07C 215/46 (2013.01); C07C 213/00 (2013.01); C07C 2102/10 (2013.01); C07C 217/52 (2013.01); C07D 213/36 (2013.01); C07C 213/08 (2013.01);
Abstract

A method for industrially preparing a nitrogen substituted 6-amino-5,6,7,8-tetrahydronaphthol includes reacting a nitrogen substituted amino-5,6,7,8-tetrahydronaphthol compound of formula (II) with a 2-substituted ethyl sulfonate compound of formula (III) under an alkaline condition and in the presence of a sulfite.

Find Patent Forward Citations

Meng, Qingguo. (2014). Method for industrially preparing nitrogen substituted amino-5,6,7,8-tetrahydronaphthol (U.S. Patent No. 8809590). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8809590

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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