Synthesis of spiro[indole-3,3′-[1,3,4]thiadiazino[3,2-a]benzimidazoles] and spiro[indole-3,6′-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazines]
作者:N. I. Gaponenko、A. A. Kolodina、A. V. Lesin、S. V. Kurbatov、Z. A. Starikova、Yu. V. Nelyubina
DOI:10.1007/s11172-010-0170-8
日期:2010.4
A method for annulation of the tetrahydrothiadiazine ring to benzimidazoles and 1,2,4-tri-azoles was developed. A number of earlier unknown [1,3,4]thiadiazino[3,2-a]benzimidazoles and triazolo[3,4-b][1,3,4]thiadiazines were obtained as spiro compounds with the oxindole fragment. According to NMR and X-ray diffraction data, the formation of the tetrahydrothiadiazine ring is a diastereospecific process.
一种方法被开发用于将四氢噻二唑环环化为苯并咪唑和1,2,4-三唑。获得了多种早先未知的[1,3,4]噻二嗪[3,2-a]苯并咪唑和三唑[3,4-b][1,3,4]噻二嗪,作为与氧吲哚片段的螺旋化合物。根据核磁共振(NMR)和X射线衍射数据,四氢噻二唑环的形成是一个非对称特异性的过程。