公开(公告)号：US11225454B2

公开(公告)日：2022-01-18

申请号：US16744323

申请日：2020-01-16

Applicant: Monsanto Technology LLC

Inventor： John H. Ahn ,  Kam-To Wan

IPC: C07C209/36 ,  B01J21/18 ,  B01J23/42 ,  B01J23/89 ,  C07C37/045 ,  B01J35/00 ,  C07C245/20 ,  C07C231/02

Abstract: The present invention generally relates to processes for the catalytic hydrogenation of halonitroaromatics. In particular, the present invention includes processes for the catalytic hydrogenation of halonitroaromatics such as 2,5-dicloronitrobenzene to 2,5-dichloroaniline over a platinum-containing catalyst. The present invention also relates to processes for producing 3,6-dichloro-2-methoxybenzoic acid.

公开(公告)号：US11820725B2

公开(公告)日：2023-11-21

申请号：US17545250

申请日：2021-12-08

Applicant: Monsanto Technology LLC

Inventor： John H. Ahn ,  Kam-To Wan

IPC: C07C245/20 ,  C07C209/36 ,  B01J21/18 ,  B01J23/42 ,  B01J23/89 ,  C07C37/045 ,  B01J35/00 ,  C07C231/02

CPC classification number: C07C209/365 ,  B01J21/18 ,  B01J23/42 ,  B01J23/89 ,  B01J35/0013 ,  C07C37/045 ,  C07C231/02 ,  C07C245/20 ,  C07C209/365 ,  C07C211/52 ,  C07C37/045 ,  C07C39/30

Abstract: The present invention generally relates to processes for the catalytic hydrogenation of halonitroaromatics. In particular, the present invention includes processes for the catalytic hydrogenation of halonitroaromatics such as 2,5-dicloronitrobenzene to 2,5-dichloroaniline over a platinum-containing catalyst. The present invention also relates to processes for producing 3,6-dichloro-2-methoxybenzoic acid.

公开(公告)号：US10550063B2

公开(公告)日：2020-02-04

申请号：US15516105

申请日：2015-10-02

Applicant: Monsanto Technology LLC

Inventor： Kam-To Wan ,  John H. Ahn ,  John Wang ,  Don Probst

IPC: C07C51/367 ,  C07C37/00 ,  C07C51/00

Abstract: Processes for producing 2,5-dichlorophenol and 3,6-dichloro-2-methoxybenzoic acid are described. Various processes for isomerizing 2,4-dichlorophenol over a zeolite catalyst to form 2,5-dichlorophenol are provided. Processes for preparing 2,5-dichlorophenol including hydroxylating 1,4-dichlorobenzene are also described. The present invention also relates to processes for producing 3,6-dichloro-2-methoxybenzoic acid.

公开(公告)号：US20200216379A1

公开(公告)日：2020-07-09

申请号：US16724534

申请日：2019-12-23

Applicant: Monsanto Technology LLC

Inventor： John H. Ahn ,  Don Probst ,  Kam-To Wan ,  John Wang

IPC: C07C51/367 ,  C07C37/00 ,  C07C39/30 ,  C07C51/16 ,  C07C51/00

Abstract: Processes for producing 2,5-dichlorophenol and 3,6-dichloro-2-methoxybenzoic acid are described. Various processes for isomerizing 2,4-dichlorophenol over a zeolite catalyst to form 2,5-dichlorophenol are provided. Processes for preparing 2,5-dichlorophenol including hydroxylating 1,4-dichlorobenzene are also described. The present invention also relates to processes for producing 3,6-dichloro-2-methoxybenzoic acid.

公开(公告)号：US20180282258A1

公开(公告)日：2018-10-04

申请号：US15761986

申请日：2016-09-30

Applicant: Monsanto Technology LLC

Inventor： John H. Ahn ,  Kam-To Wan

IPC: C07C209/36 ,  C07C231/02 ,  B01J21/18 ,  B01J23/42

CPC classification number: C07C209/365 ,  B01J21/18 ,  B01J23/42 ,  B01J23/89 ,  B01J35/0013 ,  C07C37/045 ,  C07C231/02 ,  C07C245/20 ,  C07C211/52 ,  C07C39/30

Abstract: The present invention generally relates to processes for the catalytic hydrogenation of halonitroaromatics. In particular, the present invention includes processes for the catalytic hydrogenation of halonitroaromatics such as 2,5-dicloronitrobenzene to 2,5-dichloroaniline over a platinum-containing catalyst. The present invention also relates to processes for producing 3, 6-dichloro-2-methoxybenzoic acid.

公开(公告)号：US20220098141A1

公开(公告)日：2022-03-31

申请号：US17545250

申请日：2021-12-08

Applicant: Monsanto Technology LLC

Inventor： John H. Ahn ,  Kam-To Wan

IPC: C07C209/36 ,  B01J21/18 ,  B01J23/42 ,  B01J23/89 ,  C07C37/045 ,  B01J35/00 ,  C07C245/20 ,  C07C231/02

Abstract: The present invention generally relates to processes for the catalytic hydrogenation of halonitroaromatics. In particular, the present invention includes processes for the catalytic hydrogenation of halonitroaromatics such as 2,5-dicloronitrobenzene to 2,5-dichloroaniline over a platinum-containing catalyst. The present invention also relates to processes for producing 3,6-dichloro-2-methoxybenzoic acid.

公开(公告)号：US10343965B2

公开(公告)日：2019-07-09

申请号：US15578869

申请日：2016-05-31

Applicant: MONSANTO TECHNOLOGY LLC

Inventor： Kam-To Wan ,  Eduardo A. Casanova ,  John H. Ahn ,  Junqiu Yang

IPC: C02F1/20 ,  C02F1/26 ,  C02F1/66 ,  C07C37/72 ,  C07C37/74 ,  C07C37/84 ,  C07C39/30 ,  C07C51/09 ,  C07C51/15 ,  C07C65/05 ,  C07C65/21 ,  C07C67/31 ,  C07C69/92 ,  C02F101/34 ,  C02F101/36 ,  C07C51/347

Abstract: Various processes for the separation of a mixture containing dichlorophenols are described. In various aspects, the present invention relates to separation processes that produce an extract enriched in 2,4-dichlorophenol content and an extract enriched in 2,5-dichlorophenol content. The present invention further relates to various processes that integrate with these separation processes, such as a process for producing 3,6-dichloro-2-methoxybenzoic acid (dicamba) or salt or ester thereof or a process for producing 2,4-dichlorophenoxyacetic acid (2,4-D) or salt or ester thereof.

公开(公告)号：US20170247310A1

公开(公告)日：2017-08-31

申请号：US15516105

申请日：2015-10-02

Applicant: Monsanto Technology LLC

Inventor： Kam-To Wan ,  John H. Ahn ,  John Wang ,  Don Probst

IPC: C07C51/367 ,  C07C51/00 ,  C07C37/00

CPC classification number: C07C51/367 ,  C07C37/00 ,  C07C39/30 ,  C07C51/00 ,  C07C51/16 ,  C07C59/56 ,  C07C59/64

Abstract: Processes for producing 2,5-dichlorophenol and 3,6-dichloro-2-methoxybenzoic acid are described. Various processes for isomerizing 2,4-dichlorophenol over a zeolite catalyst to form 2,5-dichlorophenol are provided. Processes for preparing 2,5-dichlorophenol including hydroxylating 1,4-dichlorobenzene are also described. The present invention also relates to processes for producing 3,6-dichloro-2-methoxybenzoic acid.

公开(公告)号：US11008276B2

公开(公告)日：2021-05-18

申请号：US16724534

申请日：2019-12-23

Applicant: Monsanto Technology LLC

Inventor： John H. Ahn ,  Don Probst ,  Kam-To Wan ,  John Wang

IPC: C07C51/367 ,  C07C37/00 ,  C07C39/30 ,  C07C51/16 ,  C07C51/00

Abstract: Processes for producing 2,5-dichlorophenol and 3,6-dichloro-2-methoxybenzoic acid are described. Various processes for isomerizing 2,4-dichlorophenol over a zeolite catalyst to form 2,5-dichlorophenol are provided. Processes for preparing 2,5-dichlorophenol including hydroxylating 1,4-dichlorobenzene are also described. The present invention also relates to processes for producing 3,6-dichloro-2-methoxybenzoic acid.

公开(公告)号：US20200223784A1

公开(公告)日：2020-07-16

申请号：US16744323

申请日：2020-01-16

Applicant: Monsanto Technology LLC

Inventor： John H. Ahn ,  Kam-To Wan

IPC: C07C209/36 ,  B01J21/18 ,  B01J23/42 ,  B01J23/89 ,  C07C37/045 ,  B01J35/00 ,  C07C245/20 ,  C07C231/02

Abstract: The present invention generally relates to processes for the catalytic hydrogenation of halonitroaromatics. In particular, the present invention includes processes for the catalytic hydrogenation of halonitroaromatics such as 2,5-dicloronitrobenzene to 2,5-dichloroaniline over a platinum-containing catalyst. The present invention also relates to processes for producing 3,6-dichloro-2-methoxybenzoic acid.