Synthesis of spiropyrrolidinyl-benzoisothiazoline derivatives by 1,3-dipolar cycloaddition of benzoisothiazole-2,2-dioxide-3-ylidenes and azomethine ylide
作者:Guorui Cao、Feifei Long、Yingchun Zhao、Yu Wang、Longjiang Huang、Dawei Teng
DOI:10.1016/j.tet.2014.10.039
日期:2014.12
The new spirocyclic compounds, spiropyrrolidinyl-benzoisothiazoline derivatives were synthesized by the 1,3-dipolar cycloaddition of benzoisothiazole-2,2-dioxide-3-ylidenes and azomethine ylide. The stereochemistry of 1,3-dipolar cycloaddition as well as the stereochemistry of Knoevenagel condensation of benzoisothiazole-2,2-dioxide with aldehydes were studied.
新的螺环化合物螺吡咯烷基-苯并异噻唑啉衍生物是通过苯并异噻唑-2,2-二氧化物-3-亚烷基的1,3-偶极环加成反应和偶氮亚甲基叶立德合成的。研究了1,3-偶极环加成反应的立体化学以及苯并异噻唑-2,2-二氧化物与醛的Knoevenagel缩合反应的立体化学。