Synthesis of Novel Spiroheterocycles Through 1,3-Dipolar Cycloaddition of Azomethine Ylides with Triarylideneacetylacetone Through Decarboxylation
作者:Ramalingam Murugan、R. Raghunathan、S. Sriman Narayanan
DOI:10.1080/00397910903341189
日期:2010.9.30
Triarylideneacetylacetone undergoes regioselective 1,3-dipolar cycloaddition reactions with azomethine ylide derived from isatin and L-proline/sarcosine/octahydro-1H-indole-2-carboxylic acid by decarboxylation, affording a series of spiroheterocycles. This one-pot, three-component tandem reaction is efficient and yields novel spiroheterocylic compounds in good yields. The structure and stereochemistry
三亚芳基乙酰丙酮与衍生自靛红和 L-脯氨酸/肌氨酸/八氢-1H-吲哚-2-羧酸的偶氮甲碱叶立德发生区域选择性 1,3-偶极环加成反应,通过脱羧得到一系列螺杂环。这种一锅三组分串联反应是有效的,并以良好的收率产生新型螺杂环化合物。环加合物的结构和立体化学已通过单晶 X 射线和光谱技术确定。