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Studies with condensed aminothiophenes: Further investigation on the reactivity of condensed aminothiophenes toward electron poor and acetylenes under microwave heating
Author(s) -
AlSaleh Balkis,
ElApasery Morsy A.
Publication year - 2006
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.5570430306
Subject(s) - chemistry , diethylamine , moiety , thiophene , alkylation , reactivity (psychology) , microwave , photochemistry , microwave irradiation , ring (chemistry) , organic chemistry , medicinal chemistry , computational chemistry , catalysis , medicine , physics , alternative medicine , pathology , quantum mechanics
The reaction of aminothienopyridazines 8a,b , aminothienocoumarin 13 and aminothienonaphthopyran 14 with enaminones 9, 17 and 20a,b under microwave irradiation affords either a mixture of both condensations C‐1 alkylation products 15 and 16 or amino moiety alkylation and diethylamine elimination or only one of these products depending on nature of substituents on the thiophene ring. On the other hand reaction of these condensed aminothiophenes with 3‐dimethylaminoacrylaldehyde afforded 24 and 25 .