(3+2) CYCLOADDITION OF <i>N</i>-BENZYLAZOMETHINE METHYLIDE WITH 4-ARYLIDENE-1<i>H</i>-IMIDAZOLE-5(4<i>H</i>)-ONES
DOI:
https://doi.org/10.1007/5421Keywords:
azomethine ylides, imidazole, pyrrolidine, spirocyclic compounds, (3 2) cycloaddition.Abstract
4-Arylidene-1H-imidazol-5(4H)-ones react with N-benzylazomethine methylide under trifluoroacetic acid catalysis to form 9-aryl-1,3,7-triazaspiro[4.4]non-1-en-4-ones in 66–95% yields as one diastereomer in each case.
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Published
2020-01-31
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Short Communications