Malonic acid di-salts and a method for preparing malonyl dihalides

Patent metadata

Field	Value
Publication number	US-9108965-B2
Application number	US-201214364340-A
Country	US
Kind code	B2
Filing date	Dec 13, 2012
Priority date	Dec 15, 2011
Publication date	Aug 18, 2015
Grant date	Aug 18, 2015

Abstract

A compound of Formula 2 is disclosed

wherein R 1 , M A and M B are as defined in the disclosure.

Also disclosed is a method for preparing a compound of Formula 1

wherein R 1 and X are as defined in the disclosure comprising contacting a compound of Formula 2 with a halogenating agent.

Also disclosed is a method for preparing a compound of Formula 4

wherein R 1 , R 3 and R 4 are as defined in the disclosure, comprising reacting a compound of Formula 5 wherein R 3 and R 4 are as defined in the disclosure with a compound of Formula 1, with a compound of Formula 1, the process of preparing the compound of Formula 4 includes the step of preparing the compound of Formula 1 from the compound of Formula 2 by the method disclosed above.

Also disclosed is compound that is methyl 3,5-dichlorobenzeneethanimidate methyl 3,5-dichlorobenzeneethanimidate or ethyl 3,5-dichlorobenzeneethanimidate or salts thereof.

First claim

The invention claimed is:

1. A compound of Formula 2

wherein
R 1 is phenyl optionally substituted with Q and up to 3 substituents independently selected from R 2 ;
each R 2 is independently halogen, C 1 -C 4 alkyl, C 1 -C 4 haloalkyl, C 1 -C 4 alkoxy or C 1 -C 4 haloalkoxy;
Q is pyridinyl optionally substituted with up to 2 substituents indep…

Assignees

• Du Pont

Inventors

• Zhang Wenming

Classifications

• C07D471/04 Primary

  Chemistry & Metallurgy · mapped topic

• C07C57/36

  Chemistry & Metallurgy · mapped topic

• C07C57/72

  Chemistry & Metallurgy · mapped topic

• C07C57/34

  Chemistry & Metallurgy · mapped topic

• C07C51/60

  Chemistry & Metallurgy · mapped topic