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:
Jul. 25, 1989
Filed:
Sep. 21, 1987
Applicant:
Inventors:
Peter Mues, Krefeld, DE;
Hans-Josef Buysch, Krefeld, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
549334 ; 549335 ; 549347 ;
Abstract
The process according to the invention is particularly suitable for the preparation of aliphatic spiroorthocarbonates. For the preparation of aliphatic spiroorthocarbonates of the formula ##STR1## in which dichloromethane derivatives of the formula