Method for the Production of N-Substituted (3-Dihalomethyl-1-Methyl-Pyrazole-4-yl) Carboxamides
申请人:Zierke Thomas
公开号:US20100174094A1
公开(公告)日:2010-07-08
The present invention relates to a process for preparing N-substituted (3-dihalomethylpyrazol-4-yl)carboxamides of the formula (I)
in which R
1
is optionally substituted phenyl or C
3
-C
7
-cycloalkyl, R
1a
is hydrogen or fluorine, or R
1a
together with R
1
is optionally substituted C
3
-C
5
-alkanediyl or C
5
-C
7
-cycloalkanediyl, R
2
is C
1
-C
6
-alkyl, C
2
-C
6
-alkenyl, C
2
-C
6
-alkynyl or C
1
-C
4
-alkoxy-C
1
-C
2
-alkyl, X is F or Cl and n is 0, 1, 2 or 3; which comprises
A) providing a compound of the formula (II)
in which X is F or Cl, Y is Cl or Br and R
2
has one of the meanings given above and
B) reacting a compound of the formula (II) with carbon monoxide and a compound of the formula (III)
in which R
1
, R
1a
and n have one of the meanings given above; in the presence of a palladium catalyst;
to intermediates used for the preparation according to the process according to the invention, and also to processes for their preparation.
The present invention relates to a process for the synthesis of 2-aminobiphenylene and derivatives thereof by reacting a benzene diazonium salt with an aniline compound under basic reaction conditions.
本发明涉及一种通过在碱性反应条件下将苯重氮盐与苯胺化合物反应合成2-氨基联苯及其衍生物的方法。
PRODUCTION METHOD FOR PYRAZOLE-4-CARBOXAMIDE DERIVATIVE
申请人:JAPAN FINECHEM COMPANY, INC.
公开号:US20200181091A1
公开(公告)日:2020-06-11
The present invention relates to a method of producing a pyrazole-4-carboxamide derivative including subjecting a pyrazole-4-carboxylic acid ester and an amine to an aminolysis reaction in a solvent in the presence of a base, provided that the reaction is completed without removing a by-produced alcohol or phenol outside the system. An industrial production method of a pyrazole-4-carboxamide derivative which is useful as an agricultural fungicide, simply and in high yield and high purity as compared with the conventional method, is provided.
[EN] HALOGEN SUBSTITUTED DIKETONES, PYRAZOLE COMPOUNDS AND PROCESSES FOR THE MANUFACTURE OF PYRAZOLE COMPOUNDS<br/>[FR] DICÉTONES SUBSTITUÉES PAR UN HALOGÈNE, COMPOSÉS DE PYRAZOLE ET LEURS PROCÉDÉS DE PRODUCTION
申请人:SOLVAY
公开号:WO2017129759A1
公开(公告)日:2017-08-03
The present invention concerns new halogen substituted diketone compounds, new pyrazole compounds, processes for the manufacture of pyrazole compounds and processes for the manufacture of agrochemical or pharmaceutical compounds.
Pd-Catalysed Suzuki–Miyaura cross-coupling of aryl chlorides at low catalyst loadings in water for the synthesis of industrially important fungicides
作者:Patrizio Orecchia、Desislava Slavcheva Petkova、Roland Goetz、Frank Rominger、A. Stephen K. Hashmi、Thomas Schaub
DOI:10.1039/d1gc02602j
日期:——
The Suzuki–Miyaura coupling reaction of electron-poor aryl chlorides in the synthesis of crop protection-relevant active ingredients in water is disclosed. Optimisation of the reaction conditions allowed running the reaction with 50 ppm of Pd-catalyst loading without an additional organic solvent in the cross-coupling reaction step in short reaction times. The system was optimised for the initial cross-coupling