山梨糖醇和盐酸二甲双胍的深共熔熔体:3-取代的2-氨基萘[2,3 - b ]呋喃-4,9-二酮的合成及其光物理性质†
摘要:
通过2-羟基-1,4-萘醌之间的多米诺反应,提出了一种高效且环境友好的一锅法,用于3-取代的2-氨基萘[2,3 - b ]呋喃-4,9-二酮的多样化合成,β-硝基苯乙烯和乙酸铵在由山梨糖醇和盐酸二甲双胍制成的新型深共熔溶剂中。这些产品的电子-供体-受体共轭体系观察到明显的正溶剂溶变色,导致它们在极性和质子溶剂中的可见吸收带发生红移和增色移动。从非极性溶剂变为极性溶剂时观察到约30 nm的红移,并引起明显的颜色变化。
Synthesis of 3-Substituted 2-Aminonaphtho[2,3-<i>b</i>]furan-4,9-diones from 2-Hydroxy-1,4-Naphthoquinone and Nitroalkenes
作者:Manoj R. Zanwar、Veerababurao Kavala、Sachin D. Gawande、Chun-Wei Kuo、Ting-Shen Kuo、Mei-Ling Chen、Chiu-Hui He、Ching-Fa Yao
DOI:10.1002/ejoc.201300996
日期:2013.12
The efficient base-catalyzed synthesis of 3-substituted2-aminonaphtho[2,3-b]furan-4,9-dione derivatives from readily available precursors such as 2-hydroxy-1,4-naphthoquinone and nitroalkenes under aqueous conditions is described. Interesting features of this methodology are the conversion of a nitro functionality into an amino functionality in the absence of a reducing agent and the development of