A New Synthesis and Process Development of Bis(fluoroalkyl)pyrazoles As Novel Agrophores
摘要:
The synthesis of 3,5-bis(fluoroalkyl)-pyrazoles as novel agrophores is described. Commercially available fluoroacetoacetates are treated with BF3-activated TFEDMA affording in a straightforward one-pot sequence pyrazole carboxylates in good yields and with excellent regioselectivity. The carboxylate intermediates have been converted into the corresponding pyrazolic acids and submitted to decarboxylation, affording valuable building blocks for the design of novel bioactive ingredients. The found process is suitable for scale up and preparation of compounds in kilogram quantity.
METHOD FOR PRODUCING 3,5-BIS(FLUOROALKYL)-PYRAZOL-4-CARBOXYLIC ACID DERIVATIVES AND 3,5-BIS(FLUOROALKYL)-PYRAZOLES
申请人:BAYER CROPSCIENCE AG
公开号:US20150011779A1
公开(公告)日:2015-01-08
The present invention relates to novel 3,5-bis(fluoroalkyl)pyrazole-4-carboxylic acid derivatives and to a process for preparing 3,5-bis(fluoroalkyl)pyrazole-4-carboxylic acid derivatives and 3,5-bis(fluoroalkyl)pyrazoles.
Method for producing 3,5-bis(fluoroalkyl)-pyrazol-4-carboxylic acid derivatives and 3,5-bis(fluoroalkyl)-pyrazoles
申请人:BAYER CROPSCIENCE AG
公开号:US09309202B2
公开(公告)日:2016-04-12
The present invention relates to novel 3,5-bis(fluoroalkyl)pyrazole-4-carboxylic acid derivatives and to a process for preparing 3,5-bis(fluoroalkyl)pyrazole-4-carboxylic acid derivatives and 3,5-bis(fluoroalkyl)pyrazoles.
[DE] VERFAHREN ZUR HERSTELLUNG VON 3,5-BIS(FLUORALKYL)-PYRAZOL-4-CARBONSÄURE-DERIVATEN UND 3,5-BIS(FLUORALKYL)-PYRAZOLEN<br/>[EN] METHOD FOR PRODUCING 3,5-BIS(FLUOROALKYL)-PYRAZOL-4-CARBOXYLIC ACID DERIVATIVES AND 3,5-BIS(FLUOROALKYL)-PYRAZOLES<br/>[FR] PROCÉDÉ DE PRÉPARATION DE DÉRIVÉS D'ACIDE 3,5-BIS(FLUOROALKYL)PYRAZOLE-4-CARBOXYLIQUE ET DE 3,5-BIS(FLUOROALKYL)PYRAZOLES
申请人:BAYER CROPSCIENCE AG
公开号:WO2013113829A1
公开(公告)日:2013-08-08
Die vorliegende Erfindung betrifft neue 3,5-Bis(fluoralkyl)-pyrazol-4-carbonsäure-Derivate sowie ein Verfahren zur Herstellung von 3,5-Bis(fluoralkyl)-pyrazol-4-carbonsäure-Derivaten und 3,5-Bis(fluoralkyl)-pyrazolen.