Oxidative Conversion of Aldoximes into Carboxylic Acid Esters
摘要:
Aromatic and aliphatic aldoximes or their O-methyl ethers can be efficiently converted into the corresponding carboxylic acid esters by treatment with an alcoholic solution of 30% hydrogen peroxide in the Presence of catalytic amounts of 2-nitrobenzeneseleninic acid. Primary alcohols give excellent to good yields, secondary ones - good to moderate, but with tertiary alcohols no esterification is obserwed.
Oxidative Conversion of Aldoximes into Carboxylic Acid Esters
摘要:
Aromatic and aliphatic aldoximes or their O-methyl ethers can be efficiently converted into the corresponding carboxylic acid esters by treatment with an alcoholic solution of 30% hydrogen peroxide in the Presence of catalytic amounts of 2-nitrobenzeneseleninic acid. Primary alcohols give excellent to good yields, secondary ones - good to moderate, but with tertiary alcohols no esterification is obserwed.
Pyrazolyl biphenyl carboxamides and the use thereof for controlling undesired microorganisms
申请人:——
公开号:US20040053971A1
公开(公告)日:2004-03-18
Novel pyrazolylbiphenylcarboxamides of the formula (I)
1
in which
R
1
, R
2
, X, m, Y and n are each as defined in the description,
a plurality of processes for preparing these substances and their use for controlling undesirable microorganisms, and also novel intermediates and their preparation.
Diaryliodoniums by Rhodium(III)-Catalyzed CH Activation: Mild Synthesis and Diversified Functionalizations
作者:Fang Xie、Zhipeng Zhang、Xinzhang Yu、Guodong Tang、Xingwei Li
DOI:10.1002/anie.201502278
日期:2015.6.15
Diaryliodonium salts play an increasingly important role as an aryl source. Reported is the first synthesis of diaryliodoniums by rhodium(III)‐catalyzed CH hyperiodination of electron‐poor arenes under chelation assistance. This CI coupling reaction occurred at room temperature with high regio‐selectivity and functional‐group compatibility. Subsequent diversified nucleophilic functionalization of
Pyrazolyl biphenyl carboxamides and the use thereof for controlling undesirable microorganisms
申请人:Elbe Hans-Ludwig
公开号:US20050182120A1
公开(公告)日:2005-08-18
Novel pyrazolylbiphenylcarboxamides of the formula (I)
in which
R
1
, R
2
, X, m, Y and n are each as defined in the description,
a plurality of processes for preparing these substances and their use for controlling undesirable microorganisms, and also novel intermediates and their preparation.
The present invention relates to hydroximoyl-tetrazole derivatives of formula (I), their process of preparation, their use as fungicide active agents, particularly in the form of fungicide compositions and methods for the control of phytopathogenic fungi, notably of plants, using these compounds or compositions.
wherein A represents a tetrazoyl group, Het represents a pyridyl group or a thiazolyl group and X represents various substituents.