Synthesis of biologically important novel fluorinated spiro heterocycles under microwaves catalyzed by montmorillonite KSF
作者:Kapil Arya、Anshu Dandia
DOI:10.1016/j.jfluchem.2006.12.003
日期:2007.3
thiazolidines (5) containing α,β-unsaturated function have been used as component of Micheal addition with equimolar amount of 2-aminopyridine (6a) to give novel fluorinated spiro [indole-3,2′-pyrido[1,2-a]thiazolo[5,4-e]pyrimidines] (7) in a single step under microwaves in presence of montmorillonite KSF as solid support. The new improved synthetic method for fluorinated spiro [indole-3,2′-thiazolo[4
含α,β-不饱和官能团的氟化螺噻唑烷(5)的芳基二烯已用作Micheal加成的组分,并加入等摩尔量的2-氨基吡啶(6a),得到了新型氟化螺[吲哚-3,2'-吡啶[1] ,在蒙脱土KSF作为固体载体存在下,在微波下一步一步地合成[2-2-]噻唑并[5,4-e]嘧啶](7)。还开发了一种新的改进的氟化螺[吲哚-3,2'-噻唑并[4,5-d]嘧啶]的合成方法(8),涉及到(5))与硫脲在单模微波反应器下。与常规合成和多模微波炉的比较表明,在单模微波反应器下,反应更快,产率得到了提高。还讨论了所评估化合物的化学结构与抗分枝杆菌,抗真菌活性之间的构效关系。