New Disubstituted Carbanion Ylides from Pyridazine.
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چکیده
منابع مشابه
Antidepressant activity of new 3-amino-5-disubstituted benzylidene-6-methyl-(4H)-pyridazine derivatives.
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The reaction of 3,3-dichloro-2,2,4,4-tetramethylcyclobutanethione (1) with diazo compounds yielded spirocyclic 2,5-dihydro-1,3,4-thiadiazoles 3, which decomposed at ca. 45°C to give the corresponding thiocarbonyl ylide of type 4. In the absence of trapping agents, these thiocarbonyl ylides underwent a 1,3-dipolar electrocyclization to yield spirocyclic thiiranes 5. On the other hand, the thioca...
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ژورنال
عنوان ژورنال: Acta Chemica Scandinavica
سال: 1995
ISSN: 0904-213X
DOI: 10.3891/acta.chem.scand.49-0778