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Studies on ketene and its derivatives. LXXXIII. Reaction of diketene with isoquinolinium and pyridinium methylide derivatives

✍ Scribed by Tetsuzo Kato; Takuo Chiba; Shigeru Tanaka

Book ID
112123743
Publisher
Journal of Heterocyclic Chemistry
Year
1976
Tongue
English
Weight
218 KB
Volume
13
Category
Article
ISSN
0022-152X

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## Abstract Pyridinium and isoquinolinium ylides (**__7__** and **__12__**) derived from malonic ester react in an unusual manner with isocyanates giving the new pyridinium ylide (**__9__**) and the new isoquinolinium ylide (**__14__**). __C__ β†’ __N__ Migration of the COOEt group takes place at roo