Patent · US Expired

Process for the preparation of N-cyanoethanimidic acid esters

US4956503A · kind A · utility

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1References

13Claims

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Assignee

SKW Trostberg Aktiengesellschaft · DE

Inventors

Stefan Weiss · Trostberg, DE
Helmut Krommer · Trostberg, DE
Karl-Heinz Neuhauser · Taufkirchen, DE

Key dates

Filing date	Apr 18, 1989
Grant date	Sep 11, 1990
Priority date	—
Expiry date	Apr 18, 2009

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C233/00
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process for the preparation of N-cyanoethanimidic acid esters by reacting orthoacetic acid esters with cyanamide. The reaction is carried out in alcoholic solution in the presence of an acid catalyst. N-cyanoethanimidic acid esters can be prepared in this manner in a high yield and high state of purity, with a low technical outlay and in an environmentally safe manner, free of dangerous by-products.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.