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Synthesis of cycl[3.2.2]azine and benzo[g]cycl[3.2.2]azine derivatives by use of the [2 + 8] cycloaddition reaction of indolizines and dimethyl acetylenedicarboxylate

✍ Scribed by Yoshinori Tominaga; Yoshihide Shiroshita; Tomohiko Kurokawa; Hiromi Gotou; Yoshiro Matsuda; Akira Hosomi

Book ID
112129234
Publisher
Journal of Heterocyclic Chemistry
Year
1989
Tongue
English
Weight
860 KB
Volume
26
Category
Article
ISSN
0022-152X

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## Abstract The synthesis of 8‐substituted indolizines is described __via__ a two step process in which a 1,4‐diketone, containing a rerf‐butyl group, is cyclocondensed with a trialkylsilyl protected pyrrole to provide 5,8‐disubstituted indolizines in higher yields than the identical reaction with

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A Convenient Synthesis of 8-Substituted Indolizines as Precursors to 5-Substituted Cycl{3.2.2}azine Derivatives. -A simple and efficient approach for the title precursors (V), which are useful for the synthesis of the azine derivatives (VII), is presented. It is noteworthy that the first step also