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. 24, 2018
Filed:
Dec. 01, 2015
Applicant:
Albemarle Corporation, Baton Rouge, LA (US);
Inventors:
Eric L. Williams, Zachary, LA (US);
Dean K. Hoglen, Baton Rouge, LA (US);
Assignee:
ALBEMARLE CORPORATION, Baton Rouge, LA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 333/76 (2006.01);
U.S. Cl.
CPC ...
C07D 333/76 (2013.01);
Abstract
The invention relates to a novel method for the preparation of 4-phenyldibenzo[b,d]thiophene which can be conducted in one pot up to the thiophene ring formation. The synthesis is based upon dihalobenzenes and phenyllithium, which are readily obtainable, and can give higher yields (based upon either reactant) than the yields current methods, which use a synthetic pathway based upon dibenzo[b,d]thiophene.