Patent · US Expired

Preparation of bicyclic amidines and diazacycloalkenes

US6166207A · kind A · utility

7Cited by

2References

8Claims

0Family size

Assignee

BASF SE

Inventors

Wolfgang Friedrich · Speyer, DE
Heinz-Josef Kneuper · Mannheim, DE
Karsten Eller · Stockach, DE
Tom Witzel · Ludwigshafen, DE

Key dates

Filing date	Nov 30, 1998
Grant date	Dec 26, 2000
Priority date	—
Expiry date	Nov 30, 2018

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D239/06
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

In a process for preparing a bicyclic amidine by reacting a lactone and a diamine with elimination of water, water formed by elimination is removed from the reaction mixture during the reaction. A diazabicycloalkene, a process for its preparation and its use are also described.

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