The reaction of α-functionalized carbonyl derivatives with β-nitroacrylates, catalyzed by acidic alumina and in the absence of solvent, allows the one-pot synthesis of tetrasubstituted furan derivatives, in which at least two powerful functionalities are present in the 3- and 4-positions.
Solvent-Free, <i>anti</i>-Michael
Addition of Active Methylene Derivatives to β-Nitroacrylates:
Eco-Friendly, Chemoselective Synthesis of Polyfunctionalized Nitroalkanes
The chemoselective, anti-Michael addition of active methylene derivatives to β-nitroacrylates can be easily performed at room temperature, under solvent-free conditions, using a catalytic amount of potassium carbonate as heterogeneous catalyst.
The reaction of β-nitroacrylates with β-enaminones, at room temperature and under solvent- and promoter-free conditions, affords the one-potsynthesis of polyfunctionalized pyrroles in high yields.
Carbonate on polymer is a valuable solid supported reagent (SSR) to promote, under eco-friendly conditions, the preparation of 2H-1,4-benzoxazin-2-onederivatives starting from β-nitroacrylates and aminophenols via a domino process.
聚合物上的碳酸盐是一种宝贵的固体支持试剂(SSR),可在环保条件下促进通过多米诺工艺从β-硝基丙烯酸酯和氨基苯酚制备2 H -1,4-苯并恶嗪-2-酮衍生物。
β-Nitroacrylates and silyl enol ethers as key starting materials for the synthesis of polyfunctionalized β-nitro esters and 1,2-oxazine-2-oxides
The reaction of silyl enol ethers with beta-nitroacrylates, in the presence of tetrabutyl ammonium fluoride as catalyst, allows the formation of polyfunctionalized beta-nitro esters, or hexahydro-4H-benzoxazine-2-oxides, depending on the nature of the starting silyl enol ethers. (C) 2009 Elsevier Ltd. All rights reserved.