acetates and xanthates for the synthesis of thiazol-2-yl ethers with remarkable regioselectivity has been developed. Various oxime acetates, whether derived from aryl ketones or alkyl ketones, or natural product cores are suitable for this conversion. Unique dihydrothiazoles were also obtained when both reaction sites were methine. Mechanistic studies indicated that imino copper(III) intermediates were involved
A novel copper-catalyzedC(sp3)-H oxidative functionalization of aromatic oxime acetates with [small alpha]-oxocarboxylic acids was reported. This process involved N-O/C-C bondcleavages and C-C bond formations to furnish substituted enaminones under...
An elemental sulfur atom donor strategy for constructing a thiophene-fused thiazole bis-S-heterocyclic skeletonviaCu-catalyzed three-component tandem cyclization has been developed.
Direct synthesis of 2-methylpyridines <i>via</i> I<sub>2</sub>-triggered [3 + 2 + 1] annulation of aryl methyl ketoxime acetates with triethylamine as the carbon source
A facile and efficient [3 + 2 + 1] annulation of aryl methyl ketoximeacetates and triethylamine for the synthesis of 2-methylpyridines was disclosed. This reaction demonstrated that I2 was effective in triggering N–O bond cleavage of oxime acetates generating imine radicals. It was noteworthy that this transformation employed triethylamine as the carbon source for the direct formation of pyridines