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The [4+3] annulation reaction of crotonate-derived sulfur ylides with benzylidenepyrazolones using K2CO3 as the base is reported. The ready availability of starting materials and the simple cyclization procedure make this… Click to show full abstract
The [4+3] annulation reaction of crotonate-derived sulfur ylides with benzylidenepyrazolones using K2CO3 as the base is reported. The ready availability of starting materials and the simple cyclization procedure make this approach suitable for the preparation of a diverse array of 4,7-dihydro-1H-oxepino[2,3-c]pyrazoles in good to excellent yields.
Keywords:
ylides benzylidenepyrazolones;
sulfur ylides;
crotonate derived;
derived sulfur;
oxepino pyrazoles;
dihydro oxepino
Journal Title: Synthesis
Year Published: 2019
Link to full text (if available)
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Journal Title: Synthesis
Year Published: 2019
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!