1,1,1-Trifluoro-2-hydroxy-5-benzyloxy compounds represented by the following formula (I) and optical isomers thereof: ##STR1## The compounds of the present invention are R-form and S-form when X is --C.tbd.C-- and are trans-form and cis-form both of which have respectively R-form and S-form when X is --CH.dbd.CH-- or ##STR2## ##STR3## the compound of the present invention is ##STR4## The compounds of the present invention are useful for asymmetric introduction of trifluoromethyl group and molecular designing of biologically active substances, ferroelectric liquid crystal compounds and so on.
Process for Preparing Pyridyl-Substituted Pyrazoles
申请人:Pazenok Sergii
公开号:US20110087029A1
公开(公告)日:2011-04-14
The present invention relates to a process for preparing 1-pyridyl-substituted pyrazoles, comprising the reaction of acetyleneketones with pyridylhydrazine derivatives to give 1-pyridyl-substituted dihydro-1H-pyrazoles, the further reaction thereof with elimination of water to give 1-pyridyl-substituted trihalomethylpyrazoles, and the further processing thereof.
PROCESS FOR PREPARING PYRIDYL-SUBSTITUTED PYRAZOLES
申请人:PAZENOK Sergii
公开号:US20120136156A2
公开(公告)日:2012-05-31
The present invention relates to a process for preparing 1-pyridyl-substituted pyrazoles, comprising the reaction of acetyleneketones with pyridylhydrazine derivatives to give 1-pyridyl-substituted dihydro-1H-pyrazoles, the further reaction thereof with elimination of water to give 1-pyridyl-substituted trihalomethylpyrazoles, and the further processing thereof.
1,1,1-Trifluoro-2-hydroxy-5-benzyloxy compounds represented by the following formula (I) and optical isomers thereof:
wherein X is -C≡C-, -CH=CH-,
group.
The compounds of the present invention are R-form and S-form when X is -C≡C- and are trans-form and cis-form both of which have respectively R-form and S-form when X is -CH=CH- or
When X is
the compound of the present invention is
The compounds of the present invention are useful for asymmetric introduction of trifluoromethyl group and molecular designing of biologically active substances, ferroelectric liquid crystal compounts and so on.
1,1,1-三氟-2-羟基-5-苄氧基化合物,由下式(I)及其光学异构体代表:
其中 X 为-C≡C-、-CH=CH-、
基团。
当 X 为-C≡C-时,本发明化合物为 R-型和 S-型,当 X 为-CH=CH-或-CH=CH-时,本发明化合物为反式和顺式,两者分别具有 R-型和 S-型。
当 X 为
时,本发明的化合物为
本发明化合物可用于三氟甲基的不对称引入和生物活性物质、铁电液晶化合物等的分子设计。
Verfahren zum Herstellen von Pyridyl-substituierten Pyrazolen
申请人:Bayer CropScience AG
公开号:EP2243777A1
公开(公告)日:2010-10-27
Die vorliegende Erfindung betrifft ein Verfahren zum Herstellen von 1-Pyridyl-substituierten Pyrazolen umfassend die Umsetzung von Acetylenketonen mit Pyridylhydrazin-Derivaten zu 1-Pyridyl-substituierten dihydro-1H Pyrazolen, deren Weiterreaktion unter Wasserabspaltung zu 1-Pyridyl substituierten -Trihalogenmethylpyrazolen und deren Weiterverarbeitung.