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Synthesis and functionalization strategies of the imidazo[1,2-b]pyrazole core were developed giving a rapid access to three series of novel imidazo[1,2-b]pyrazole type derivatives: C-2/C-6/C-7… Continue Reading
Protected pentofuranose, hexofuranose and hexopyranose hemiacetals were found to react efficiently with amines carrying a deactivating group (alkoxycarbonyl, tosyl or phosphoryl group) in the… Continue Reading
We report herein a synthetic pathway to new 7-bromo-1-(4-methoxybenzyl)-5-methyl-imidazo[1,5-a]imidazole-2-one. The synthetic potential of this scaffold was demonstrated by displacing bromine by… Continue Reading
A wide range of 3,6-di(hetero) arylated title imidazole derivatives are obtained with good functional group tolerance by C-3 pallado-catalyzed functionalization performed with low catalyst loading.
The amination of 3-nitropyridines with aromatic amides generated from various aminopyridine derivatives proceeded unexpectedly in the position PARA to the nitro group, giving the oxidative… Continue Reading
Based on the vinyl bis-sulfone methodology previously developed to synthesize PSE acetals, an original approach to homochiral carbohydrate-derived PSE 1,3-oxathianes is described. The ready formation… Continue Reading