Patent · US Expired

Process for preparing 1-substituted 2-methyl-tetrahydropyrimidines

US4001232A · kind A · utility

10Cited by

0References

7Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Gerhard Groegler
Gerhard Dankert · Cologne, DE
Klaus Recker · Cologne, DE
Josef Backes

Key dates

Filing date	Jul 22, 1975
Grant date	Jan 4, 1977
Priority date	—
Expiry date	Jul 22, 1995

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J31/0241
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

1-SUBSTITUTED 2-METHYL-TETRAHYDROPYRIMIDINES ARE PREPARED BY REACTING AN N-substituted propylene diamine with an acetoacetic acid ester or amine at a temperature of from 0.degree. to 80.degree. C and removing the water produced in the reaction at a temperature of from 0.degree. to 80.degree. C.

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