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...
Copper‐Catalyzed Synthesis of
<i>gem</i>
‐Bisarylthio Enamines under Redox‐Neutral Conditions
作者:Jiabin Ni、Xiaokang Mao、Ao Zhang
DOI:10.1002/adsc.201900035
日期:2019.4.23
An efficient approach for the construction of gem‐bisarylthio enamines via coupling of oxime acetates with diaryldisulfides is developed. This process involved copper‐catalyzed N−O/S−S bond cleavages and formation of two new C−S bonds. A broad range of substrates with diverse functional groups were tolerated.
A novel ruthenium-catalyzed cyclization of ketoxime carboxylates with N,N-dimethylformamide (DMF) for the synthesis of tetrasubstituted symmetrical pyridines has been developed. A methyl carbon on DMF performed as a source of a one carbon synthon. And NaHSO3 plays a role in the reaction.