Copper(II) catalyzed aromatization of tetrahydrocarbazole: An unprecedented protocol and its utility towards the synthesis of carbazole alkaloids
作者:Bhakti A. Dalvi、Pradeep D. Lokhande
DOI:10.1016/j.tetlet.2018.01.061
日期:2018.5
protocol for the aromatization of tetrahydrocarbazole is described by using catalytic copper(II) chloride dihydrate in DMSO. This newly established methodology has utilized towards the synthesis of naturally occurring carbazole alkaloids, namely 3-methylcarbazole, 3-formyl carbazole, glycozoline, glycozolicine and clauszoline-K. In addition, the protocol is generalized for the aromatization of N-substituted
通过在二甲基亚砜中使用催化氯化铜(II)二水合物描述了一种有效的四氢咔唑芳构化方案。这种新近建立的方法已经用于合成天然存在的咔唑生物碱,即3-甲基咔唑,3-甲酰基咔唑,糖唑啉,糖唑啉和clauszoline-K。另外,该方案被普遍用于N-取代的四氢咔唑,1,2,3,4-四氢喹啉,1,2,3,4-四氢异喹啉和1,2,3,4-四氢β-咔啉的芳构化,从而得到相应的杂芳族化合物从非常好的收率到优异的收率。此外,已证明该方法可耐受多种官能团,并具有优异的收率。