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:
Apr. 21, 2025
Filed:
Dec. 09, 2021
Applicant:
Shenzhen Zinwi Bio-tech Co., Ltd, Guangdong, CN;
Inventors:
Jun Zou, Guangdong, CN;
Yang Zou, Guangdong, CN;
Meisen Liu, Guangdong, CN;
Weixian Luo, Guangdong, CN;
Assignee:
SHENZHEN ZINWI BIO-TECH CO., LTD, Guangdong, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 401/04 (2005.12);
U.S. Cl.
CPC ...
C07D 401/04 (2012.12);
Abstract
The present application provides a preparation method of racemic nicotine, including the following steps: Nicotinyl chloride and methylamine are reacted under alkaline conditions to obtain methylnicotinamide, then condensed with monochloroacetone to obtain N-methyl-N-(2-oxopropyl) nicotinamide, then self-aldol condensed to obtain 1-methyl-5-(pyridin-3-yl)-1,2-dihydro-3H-pyrrol-3-one, and finally reduced to obtain racemic nicotine.