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Reactions of pyryliums with mono- and asym-di-substituted hydrazines

โœ Scribed by Katritzky, Alan R.; Ballesteros, Paloma; Tomas, Alberto Tarraga


Book ID
121458563
Publisher
Royal Society of Chemistry
Year
1981
Weight
752 KB
Category
Article
ISSN
1472-7781

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Reactions of 2-aryl-4-methoxy-9-oxocyclo
โœ Dao-Lin Wang; Kimiaki Imafuku ๐Ÿ“‚ Article ๐Ÿ“… 1998 ๐Ÿ› Journal of Heterocyclic Chemistry ๐ŸŒ English โš– 360 KB ๐Ÿ‘ 1 views

## Abstract 2โ€Arylโ€4โ€methoxyโ€9โ€oxocyclohepta[__b__]pyrylium perchlorates 1aโ€c reacted with hydroxylamine hydrochloride and hydrazine sulfate in the presence of triethylamine to afford 2โ€arylโ€4,9โ€dihydrocyclohepta[__b__]pyranโ€4,9โ€dione 4โ€oximes 3aโ€c and 4โ€hydrazones 4aโ€c in good yields, respectively