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Pyryliumverbindungen. 42. Benzocycloalkenone und Dihydro-2H,7H-1-benzopyranone aus 2,4,6-Triaryl-pyryliumsalzen und Cycloalkan-1,2-dionen

✍ Scribed by Dr. T. Zimmermann; Dr. habil. G. W. Fischer; Dr. B. Olk; Dr. M. Findeisen


Publisher
John Wiley and Sons
Year
1989
Tongue
English
Weight
698 KB
Volume
331
Category
Article
ISSN
1615-4150

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Treatment of the tetrazolium salts 1 with aqueous ammonia affords the novel ring system 2 (in certain cases along with the ylides 3). The structure of 2 has been confirmed by an Xray analysis of 2a.