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. 19, 1988
Filed:
Jun. 27, 1986
Applicant:
Inventors:
Franca Bigi, Parma, IT;
Giovanni Casiraghi, Parma, IT;
Giuseppe Casnati, Parma, IT;
Giovanni Sartori, Casalmaggiore, IT;
Assignee:
Consiglio Nazionale Delle Ricerche, Rome, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
546 77 ; 546 78 ; 546101 ; 546108 ; 548421 ; 548427 ; 549 24 ; 549 26 ; 549388 ; 549389 ; 260351 ; 2603515 ; 260365 ; 260369 ; 260383 ; 260396 ;
Abstract
A new widely-applicable method has been found for synthesis of 9,10-anthraquinones and similar chemical compounds of wide use in industry and pharmacology, by reacting suitable aromatic substrates with activated dicarboxylic acids (more particularly dichlorides) in the presence of metal halides. The special characteristics of the reaction are the good yields, high selectivity, the possibility of operating in a single reactor and the use of starting compounds which are cheap and easily available on the market.