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US 9,957,212 B2Granted
Process for producing 2,5-dihalophenolethers
AssigneeBASF SE
InventorsEric George Klauber, Michael Rack, Thomas Zierke, Nicole Holub, Gerald Schmelebeck, Junmin Ji, David Cortes
Life of this patent
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Abstract
The present invention relates to a process for providing a compound of formula (IV): wherein R1 and R2 are each independently C1-C4 alkyl, and Hal is independently Cl or Br, the process comprising the steps of: (i) reacting a compound of formula (II) wherein R1 and Hal is defined as above, to obtain a compound of formula (III) wherein R1 and Hal is defined as above, and (ii) reacting the compound of formula (III) to obtain the compound of formula (IV).
Claims7
A process of making a compound of formula (V)
- wherein R2 is C1-C4 alkyl;
- comprising the steps of:
- (i) reacting a compound of formula (II)
- in the presence of a chlorination agent to obtain a compound of formula (III)
- (ii) reacting the compound of formula (III) to obtain the compound of formula (IV)
- and
- (iii) reacting the compound of formula (IV), wherein R1 and R2 are each independently C1-C4 alkyl, in the presence of an oxidation agent to obtain the compound of formula (V).
4 more elements
Dependencies are inferred from the claim text.