公开(公告)号：US11046656B2

公开(公告)日：2021-06-29

申请号：US16731289

申请日：2019-12-31

Applicant: BASF SE

Inventor： Eric George Klauber ,  Michael Rack ,  Roland Goetz ,  Sebastian Soergel

IPC: C07D237/12 ,  C07D237/20 ,  C07D401/12 ,  C07B31/00 ,  C07B39/00 ,  C07B43/04 ,  C07D403/12

Abstract: Provided herein is a process for preparing a pyridazine amine compound of formula V, and a process for preparing dichloropyridazine amine compounds of formula IVa, IVb, and mixtures thereof. Further, provided herein are novel dichloropyridazine amine compounds of formula IVa, IVb, and mixtures thereof, wherein the amino group is an ethylamino group.

公开(公告)号：US10273216B2

公开(公告)日：2019-04-30

申请号：US15751349

申请日：2016-08-02

Applicant: BASF SE

Inventor： Eric George Klauber ,  Timo Frassetto ,  Reinhold Niemes ,  Ralf Bauer ,  Jochen Schroeder

IPC: C07D231/22 ,  C07D231/04 ,  C07D231/24

Abstract: The present invention relates to a process for preparing crystalline methyl N-[2-[[[1-(4-chlorophenyl)-1H-pyrazol-3-yl]oxy]methyl]phenyl]-N-methoxycarbamate (I), comprising a) reacting a compound of formula II with an alkylating agent in the presence of a base in the presence of a polar solvent selected from alcohols and ketons; b) the addition of water.

公开(公告)号：US10087133B2

公开(公告)日：2018-10-02

申请号：US15102353

申请日：2014-12-10

Applicant: BASF SE

Inventor： Eric George Klauber ,  Michael Rack ,  Thomas Zierke ,  Nicole Holub ,  David Cortes ,  Gerald Schmelebeck ,  Junmin Ji

IPC: C07C51/367 ,  C07C67/31 ,  C07C45/64 ,  C07C253/30 ,  C07C51/08

Abstract: The present invention relates to a process for providing dihalogen substituted salicylic acid derivatives of formula (II):

公开(公告)号：US09957212B2

公开(公告)日：2018-05-01

申请号：US15119654

申请日：2015-02-19

Applicant: BASF SE

Inventor： Eric George Klauber ,  Michael Rack ,  Thomas Zierke ,  Nicole Holub ,  Gerald Schmelebeck ,  Junmin Ji ,  David Cortes

IPC: C07C37/02 ,  C07C41/16 ,  C07C37/62 ,  C07C51/16 ,  C07C51/285

CPC classification number: C07C41/16 ,  C07C37/02 ,  C07C37/62 ,  C07C51/16 ,  C07C51/285 ,  C07C65/21 ,  C07C43/225 ,  C07C39/30 ,  C07C39/28

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).

公开(公告)号：US09701604B2

公开(公告)日：2017-07-11

申请号：US15101080

申请日：2014-12-01

Applicant: BASF SE

Inventor： Eric George Klauber ,  Michael Rack ,  Thomas Zierke ,  Sebastian Wloch ,  Nicole Holub ,  Stefan Dudenhoeffer ,  Gerald Schmelebeck ,  Junmin Ji ,  David Cortes

IPC: C07C37/70 ,  C07C37/84 ,  C07C37/74

CPC classification number: C07C37/74 ,  C07C37/84 ,  C07C39/30

Abstract: A process for purifying 2,5-dichlorophenol, the process comprising the steps of distillation and subsequent crystallization.