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. 04, 1977
Filed:
Jun. 12, 1975
Applicant:
Inventors:
Luciano Re, Rome, IT;
Valerio Caciagli, Rome, IT;
Assignee:
Snam Progetti S.p.A., Milan, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
2605 / ; 2605 / ; 260592 ; 260594 ;
Abstract
A dioldione represented by the formula: ##STR1## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4, the same or different, represent alkyl, cycloalkyl, arylalkyl, aryl or hydrogen, is prepared by reacting a compound represented by the formula: ##STR2## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 have the above meanings, with an oxidizing mixture consisting of osmium tetroxide and an alkali or alkali-earth metal chlorate.