Patent · US Active

Bifunctional phenyl ISO (THIO) cyanates, processes and intermediates for their preparation

US8232421B2 · kind B2 · utility

1Cited by

2References

6Claims

0Family size

Assignee

BASF SE

Inventors

Gerhard Hamprecht · Weinheim, DE
Michael Puhl · Hirschberg, DE
Bernd Wolf · Niederkirchen, DE
Norbert Gotz · Worms, DE
Michael Keil · Freinsheim, DE
Robert Reinhard · Schifferstadt, DE
Ingo Sagasser · Schifferstadt, DE
Werner Seitz · Plankstadt, DE

Key dates

Filing date	Sep 21, 2010
Grant date	Jul 31, 2012
Priority date	—
Expiry date	Sep 21, 2030

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C2601/14
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process for preparing phenyl iso(thio)cyanates of the formula I in which a compound of the formula II or its HCl adduct is reacted with a phosgenating agentwhere W is oxygen or sulfur and Ar and A are as defined in claim 1 is described.Moreover, the invention relates to the use of the phenyl iso(thio)cyanates for preparing crop protection agents.

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