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Synthesis and some reactions of ethyl (2-alkylimino-1,2-dihydro-1-azaazulen-1-yl)acetates

Heterocycles Volume 56 Issue 1-2 Page 171-180
published_at 2002
2007020164.pdf
[fulltext] 3.69 MB
Title
Synthesis and some reactions of ethyl (2-alkylimino-1,2-dihydro-1-azaazulen-1-yl)acetates
Creators Abe Noritaka
Creators Fukumoto Yasutaka
Creators Fujii Hiroyuki
Creators Kakehi Akikazu
Ethyl (2-alkylimino-1,2-dihydro-1-azaazulen-1-yl)acetates (3) were synthesized from 2-alkylamino-1-ethoxycarbonylmethyl-1-azaazulenium salts, which were produced from 2-alkylamino-1-azaazulenes with ethyl bromoacetate. Reaction of 3 with acid anhydrides gave the mesoionic anhydro-3-acyl-1-alkyl-2-hydroxy-1,3a-diazacyclopent[a]azulenium hydroxide. Polar cycloaddition of 3 with methyl propiolate gave methyl 2-alkyl-1-oxo-1,2-dihydro-2,9b-diazaindeno[3,3a,4,5-bcd]azulene-8-carboxylate and 3-ethyl 5-methyl 2-alkylamino-2a-azabenz[cd]azulene-3,5-dicarboxylate.
Languages eng
Resource Type journal article
Publishers 日本複素環化学研究所
Date Issued 2002
File Version Version of Record
Access Rights open access
Relations
[ISSN]0385-5414
[NCID]AA00663739
Schools 大学院医学系研究科(理学) 総合科学実験センター