Accessing Difluoromethylated and Trifluoromethylated
<i>cis</i>
‐Cycloalkanes and Saturated Heterocycles: Preferential Hydrogen Addition to the Substitution Sites for Dearomatization
作者:Xue Zhang、Liang Ling、Meiming Luo、Xiaoming Zeng
DOI:10.1002/anie.201907457
日期:2019.11.18
Reported here is a straightforward process in which a cyclic (alkyl)(amino)carbene/Rh catalyst system facilitates the preferential addition of hydrogen to the substitutionsites of difluoromethylated and trifluoromethylated arenes and heteroarenes, leading to dearomative reduction. This strategy enables the diastereoselective synthesis of cis-difluoromethylated and cis-trifluoromethylated cycloalkanes
Esters of 2,2-dimethyl-3-[(2,2-difluoro-cyclopropylidene)
申请人:Roussel-UCLAF
公开号:US05340835A1
公开(公告)日:1994-08-23
A compound selected from the group consisting of all stereoisomeric forms and mixtures thereof of a compound of the formula ##STR1## wherein Y and Z are individually selected from the groups consisting of hydrogen, halogen, --CF.sub.3, alkyl, alkoxy and alkylthio of 1 to 8 carbon atoms and aryl, aryloxy and arylthio of up to 14 carbon atoms optionally substituted with at least one member of the group consisting of halogen, hydroxy optionally esterified etherified, --CF.sub.3 and alkyl of 1 to 8 carbon atoms and R is alkyl of 1 to 8 carbon atoms or the remainder of a pyrethrinoid alcohol having excellent pesticidal properties and their preparation and intermediates.
Heterocyclic compounds suitable for the treatment of diseases related to elevated lipid levels
申请人:Novartis AG
公开号:US08063084B2
公开(公告)日:2011-11-22
The present invention provides heterocyclic derivatives that modulate the activity of stearoyl-CoA desaturase. Methods of using such derivatives to modulate the activity of stearoyl-CoA desaturase and pharmaceutical compositions comprising such derivatives are also encompassed.
The present invention provides heterocyclic derivatives hat modulate the activity of stearoyl-CoA desaturase. Methods of using such derivatives to modulate the activity of stearoyl-CoA desaturase and pharmaceutical compositions comprising such derivatives are also encompassed.
The present invention provides heterocyclic derivatives that modulate the activity of stearoyl-CoA desaturase. Methods of using such derivatives to modulate the activity of stearoyl-CoA desaturase and pharmaceutical compositions comprising such derivatives are also encompassed.