Ester as a blocking group for palladium-catalysed direct forced arylation at the unfavourable site of heteroaromatics: simple access to the less accessible regioisomers
[EN] PESTICIDALLY ACTIVE POLYCYCLIC DERIVATIVES WITH SULFUR SUBSTITUTED FIVE-MEMBERED RING HETEROCYLES<br/>[FR] DÉRIVÉS POLYCYCLIQUES À ACTIVITÉ PESTICIDE À HÉTÉROCYCLES À NOYAU À CINQ CHAÎNONS SUBSTITUÉS PAR DU SOUFRE
申请人:SYNGENTA CROP PROTECTION AG
公开号:WO2016169886A1
公开(公告)日:2016-10-27
Polycyclic derivatives of formula (I) wherein the substituents are as defined in claim 1, and the agrochemically acceptable salts, stereoisomers, enantiomers, tautomers and N-oxides of those compounds, can be used as insecticides and can be prepared in a manner known per se.
HETEROCYCLIC AMIDE COMPOUNDS USEFUL AS KINASE INHIBITORS
申请人:Wrobleski Stephen T.
公开号:US20080171741A1
公开(公告)日:2008-07-17
A compound of Formula I
and enantiomers, diastereomers and pharmaceutically-acceptable salts thereof. Also disclosed are pharmaceutical compositions containing compounds of Formula I, and methods of treating conditions associated with the activity of p38 kinase.
Ester as a blocking group for palladium-catalysed direct forced arylation at the unfavourable site of heteroaromatics: simple access to the less accessible regioisomers
作者:Lu Chen、Christian Bruneau、Pierre H. Dixneuf、Henri Doucet
DOI:10.1039/c2gc16460d
日期:——
The use of esters as blocking groups at the C2 position on a range of 3-substituted 5-membered ring heteroaromatics such as thiophenes or furans, allows control of the regioselectivity for the palladium-catalysed direct arylation at C5-H. This arylation can be followed by easy decarboxylation. This method allows sequential catalytic C5 arylation, decarboxylation and catalytic C2 arylation reactions.