Process for the preparation of the insecticide imidacloprid

Details Process for the preparation of the insecticide imidacloprid Process for the preparation of the insecticide imidacloprid

2007-11-20

2007-11-20

Saeed, Kamal A. (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

11349461

ABSTRACT:
A process for the preparation of the insecticide imidacloprid includes the reaction of 2-chloro-5-chloromethyl pyridine with 2-nitroiminoimidazolidine, carried out in the molar ratio of 1:1 to 1:1.2, in the presence of an alkali metal hydroxide in an aprotic solvent at 45 to 60° C. under stirring.

REFERENCES:
patent: 6307053 (2001-10-01), Yeh et al.
patent: 6818769 (2004-11-01), Chen
patent: 181755 (1998-09-01), None

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