Dipolar Cycloaddition of Ethyl Isocyanoacetate to 3-Chloro-2-(methylthio)/2-(methylsulfonyl)quinoxalines: Highly Regio- and Chemoselective Synthesis of Substituted Imidazo[1,5-<i>a</i>]quinoxaline-3-carboxylates
作者:G. S. M. Sundaram、B. Singh、C. Venkatesh、H. Ila、H. Junjappa
DOI:10.1021/jo070590k
日期:2007.6.1
An efficient route for regio- and chemoselective synthesis of substituted 3-(carboethoxy)imidazo[1,5-a]quinoxalines and novel diimidazo[1,5-a:5‘,1‘-c]quinoxalines via base-induced cycloaddition of ethyl isocyanoacetate to unsymmetrically substituted 3-chloro-2-(methylthio)/2-(methylsulfonyl)quinoxalines has been reported.
通过碱诱导的环加成反应合成取代的3-(羰基乙氧基)咪唑并[1,5- a ]喹喔啉和新型二咪唑并[1,5- a:5',1'- c ]喹喔啉的区域和化学选择性合成的有效途径据报道,异氰基乙酸乙酯转化为不对称取代的3-氯-2-(甲硫基)/ 2-(甲磺酰基)喹喔啉。
Kearney, Timothy; Joule, John A., Heterocycles, 1992, vol. 33, # 2, p. 757 - 762
作者:Kearney, Timothy、Joule, John A.
DOI:——
日期:——
Synthesis of Isatin 3-Oximes from 2-Nitroacetanilides
作者:Timothy Kearney、Philip A. Harris、Arthur Jackson、John A. Joule
DOI:10.1055/s-1992-26223
日期:——
2-Nitroacetanilides, prepared by alkaline hydrolysis of 1-arylamino-1-methylthio-2-nitroethenes, are converted into isatin (1H-indole-2,3-dione) 3-oximes by treatment with concentrated sulfuric acid or trifluoromethanesulfonic acid at room temperature.