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An unusual conversion of a pyridazine derivative into a pyrrole derivative

✍ Scribed by A. Pollak; M. Tišler

Book ID
104223495
Publisher
Elsevier Science
Year
1964
Tongue
French
Weight
148 KB
Volume
5
Category
Article
ISSN
0040-4039

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The reaction of diphenyl sulfone with 2,3-dibromophthalazine-1,4-dione in the presence of n-butyllithium gave a spiro-9H-thioxanthene-10,10-dioxide derivative in 45% yield, the structure of which was proved by X-ray crystallography.