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Reaction of 2,4-diaryl-6-methylpyrylium salts with nitrite esters

✍ Scribed by Yu. P. Andreichikov; G. E. Trukhan; N. V. Kholodova; G. N. Dorofeenko

Book ID
112329343
Publisher
Springer US
Year
1974
Tongue
English
Weight
74 KB
Volume
10
Category
Article
ISSN
0009-3122

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## Abstract Reaction of the 3,5‐diaryl‐1,2‐dithiolium salts 2 with the metal cyclopentadienides 4 and 9 leads to the formation of the tricyclic compounds 6 and 10 via a ring‐opened intermediate, which undergoes an intramolecular Diels‐Alder cyclization. Compounds 6 and 10 rearrange by treatment wit