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:
Dec. 20, 1983
Filed:
May. 05, 1982
Applicant:
Inventors:
Sumio Umemura, Ube, JP;
Kozo Fujii, Ube, JP;
Keigo Nishihira, Ube, JP;
Hiroyuki Sawada, Ube, JP;
Shuji Tanaka, Ube, JP;
Mamoru Nakai, Ube, JP;
Hiroshi Yoshida, Ube, JP;
Yoshiaki Kuroki, Ube, JP;
Assignee:
Ube Industries, Ltd., Ube, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
549372 ;
Abstract
There are disclosed a 4-alkoxy-1,3-dioxane-5-carbonitrile which is a novel compound represented by the formula ##STR1## wherein R represents a lower-alkyl group, and which is useful as an intermediate for the synthesis of Vitamin B.sub.1, and a process for preparing the novel compound by subjecting a 3-alkoxy-2-propenenitrile to reaction with a formaldehyde in the presence of an acid catalyst.