Fungicidal Azolopyrimidines, Process for Their Preparation and Their Use For Controlling Harmful Fungi, and Also Compositions Comprising Them
申请人:Dietz Jochen
公开号:US20100160311A1
公开(公告)日:2010-06-24
The present invention relates to azolopyrimidines of the formula I
in which the substituents are defined according to the description,
to processes and intermediates for preparing these compounds, to compositions comprising them and to their use for controlling phytopathogenic harmful fungi.
[EN] NEW BENZIMIDAZOLE PYRIDINE DERIVATIVES<br/>[FR] NOUVEAUX DÉRIVES DE BENZIMIDAZOLE PYRIDINE
申请人:[en]F. HOFFMANN-LA ROCHE AG
公开号:WO2023139085A1
公开(公告)日:2023-07-27
The invention relates to a compound of formula (I) wherein A1, A2, A3, R1, R2, R2', R3, R4and R5are as defined in the description and in the claims. The compound of formula (I) can be used as a medicament.
On the metalation of 3-substituted and 3,6-disubstituted pyridazines
metalation, pyradazines, lithiation Starting from 3,6-dichloropyridazine, a series of new pyridazines bearing lithiation-directing groups in α-position to a ring nitrogen atom (compounds 1–5) was prepared. Metalation employing lithium alkylamides was found to afford ortho-substituted pyridazines. The regioselectivity, depending on the nature of the metalating agent, is discussed.