scheme27

Scheme 27. Organocatalyzed Mannich/cyclization reaction of isothiocyanato thiobutyrolactone 48 with alkylidene pyrazolones 54. This figure is used with permission from the Royal Society of Chemistry[81].
Scheme 27. Organocatalyzed Mannich/cyclization reaction of isothiocyanato thiobutyrolactone 48 with alkylidene pyrazolones 54. This figure is used with permission from the Royal Society of Chemistry[81].
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