Microwave-assisted arylation of 5-substituted tetrazoles
作者:Yu. A. Efimova、T. V. Artamonova、G. I. Koldobskii
DOI:10.1134/s1070428010040366
日期:2010.4
ITO S.; TANAKA Y.; KAKEHI A., BULL. CHEM. SOC. JAP. <BCSJ-A8>, 1976, 49, NO 3, 762-766
作者:ITO S.、 TANAKA Y.、 KAKEHI A.
DOI:——
日期:——
ITO S.; TANAKA Y.; KAKEHI A.; KONDO K., BULL. CHEM. SOC, JAP. <BCSJ-A8>, 1976, 49, NO 7, 1920-1923
作者:ITO S.、 TANAKA Y.、 KAKEHI A.、 KONDO K.
DOI:——
日期:——
Convenient Synthesis of Highly Functionalized Pyrazolines via Mild, Photoactivated 1,3-Dipolar Cycloaddition
作者:Yizhong Wang、Claudia I. Rivera Vera、Qing Lin
DOI:10.1021/ol7017328
日期:2007.10.1
cycloaddition procedure was successfully developed for the synthesis of polysubstituted pyrazolines. This procedure involved the in situ generation of the reactive nitrile imine dipoles using a hand-held UV lamp at 302 nm, followed by spontaneous cycloaddition with a broad range of 1,3-dipolarophiles with excellent solvent compatibility, functional group tolerance, regioselectivity, and yield.
azoles with diaryliodonium salts to access 2-aryl-5-substituted-tetrazoles. Diaryliodonium salts with a wide range of both electron-rich and previously challenged electron-deficient aryl groups are applicable in this method. Diversely functionalized tetrazoles are tolerable also. We have devised a one-pot system to synthesize 2,5-diaryl-tetrazoles directly from nitriles. The synthetic utility of this
我们描述了一种简单的、无金属的区域选择性 N 2 -芳基化策略,用于 5-取代-1 H-四唑与二芳基碘鎓盐来获得 2-芳基-5-取代四唑。具有广泛的富电子和先前挑战的缺电子芳基的二芳基碘鎓盐适用于该方法。不同官能化的四唑也是可以接受的。我们设计了一种直接从腈类合成 2,5-二芳基-四唑的一锅法系统。该方法的合成效用进一步扩展到两种生物活性分子的后期芳基化。