products in metal‐catalyzed direct arylation reactions. We found that the use of only 1 mol% of the heterogeneous catalyst Pd/C promotes very efficiently the direct arylations of most heteroaromatics. In the presence of this catalyst and potassium acetate as the base, the direct arylation of thiophenes, furans, pyrroles, thiazoles, imidazoles or isoxazoles, using arylbromides as coupling partners, proceeds
Conditions for the palladium-catalyzed directarylation of a wide range of heterocycles with aryl bromides are reported. Those conditions employ a stoichiometric ratio of both coupling partners, as well as a substoichiometric quantity of pivalicacid, which results in significantly faster reactions. An evaluation of the influence of the nature of the aryl halide has also been carried out.
[EN] NEW CARBOXAMIDES WITH ANTIFUNGAL ACTIVITY<br/>[FR] NOUVEAUX CARBOXAMIDES A ACTIVITE ANTIFONGIQUE
申请人:J. URIACH & CIA. S.A.
公开号:WO1997005131A1
公开(公告)日:1997-02-13
(EN) Compounds of general formula (I) and their salts and solvates are antifungal agents and as such are useful in the treatment of various fungal infections. Pharmaceutical compositions including these compounds and processes for their preparation are also provided.(FR) Les composés de la formule générale (I) et leurs sels et solvates sont des agents antifongiques. Ils sont utiles dans le traitement de différentes infections fongiques. L'invention concerne également des compositions pharmaceutiques comprenant ces composés et des procédés permettant leur préparation.