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Michael additions with an enaminoester: Reaction of phenyl 4‐chromone‐3‐sulfonate with methyl 3‐amino‐2‐pentenoate
Author(s) -
Löwe Werner,
Kradepohl Anneliese
Publication year - 1989
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570260345
Subject(s) - chromone , chemistry , sulfonate , ring (chemistry) , stereochemistry , medicinal chemistry , organic chemistry , sodium
The novel benzoxathiinopyridines 5 and 8 and the hitherto unknown oxathiinobenzopyran 17 were synthesized by ring transformations of phenyl 4‐chromone‐3‐sulfonate ( 1 ) with methyl 3‐amino‐2‐pentenoate ( 2 ). The structures of 5, 8 and 17 were determined by spectroscopic methods and the reaction pathways for the formation of these compounds are discussed.