Patent · US Active

Method for preparing phosphorus-containing α-aminonitriles

US11220520B2 · kind B2 · utility

0Cited by

5References

20Claims

0Family size

Assignee

BASF SE

Inventors

Kilian Tellmann · Leverkusen, DE
Gunter Karig
Heike Ehrich · Berlin, DE
Michael Sebek · Rostock, DE

Key dates

Filing date	Dec 14, 2018
Grant date	Jan 11, 2022
Priority date	—
Expiry date	Jan 12, 2039

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/54
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention relates primarily to processes conducted in a continuously operated reactor for preparing particular phosphorus-containing α-aminonitriles of the formulae (Ia) and (Ib) defined hereinafter from corresponding phosphorus-containing cyanohydrin esters and to the use thereof for preparation of glufosinate or of glufosinate salts. The present invention further relates to a process for producing glufosinate/glufosinate salts.

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