An organocatalytic highly efficient approach to the direct synthesis of substituted carbazoles in water
作者:Pradeep Kumar Jaiswal、Soumen Biswas、Shivendra Singh、Sampak Samanta
DOI:10.1039/c3ob42034e
日期:——
procedure for the direct synthesis of highly functionalized 1-methoxycarbonyl-2-aryl/alkyl-3-nitro-9H-carbazoles has been achieved in water medium via a one-pot domino Michael–Henry/aromatization reaction of methyl 2-(3-formyl-1H-indol-2-yl)acetates with aryl/alky-substituted β-nitroolefins under air using DABCO (30 mol%) as an organocatalyst. In addition, the bench scale synthesis can be performed without
通过一锅多米诺骨牌迈克尔(Domino),在水介质中实现了一种简单,温和,绿色,催化和通用程序,可直接合成高度官能化的1-甲氧羰基-2-芳基/烷基-3-硝基-9 H-咔唑使用DABCO(30 mol%)作为有机催化剂,在空气中将2-(3-甲酰基-1 H-吲哚-2-基)乙酸甲酯与芳基/烷基取代的β-硝基烯烃进行亨利/芳香化反应。另外,可以在不使用有毒有机溶剂的情况下进行实验室规模的合成,并且已经制备了生物学上重要的新的稠合咔唑。