Ring closure of 4-substituted 1-amino-1-(2-aminoanilino)-2,4-dicyanobuta-1,3-diene via 5-exo-trig and 6-exo-dig process

Authors
Yamaguchi, Y Takagi, K Okamoto, Y Harada, K Kurasawa, Y
Citation
Y. Yamaguchi et al., Ring closure of 4-substituted 1-amino-1-(2-aminoanilino)-2,4-dicyanobuta-1,3-diene via 5-exo-trig and 6-exo-dig process, HETEROCYCLE, 51(8), 1999, pp. 1855-1868
Citations number
12
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
HETEROCYCLES
ISSN journal
03855414 → ACNP
Volume
51
Issue
8
Year of publication
1999
Pages
1855 - 1868
Database
ISI
SICI code
0385-5414(19990801)51:8<1855:RCO41>2.0.ZU;2-6
Abstract
Reaction conditions for ring closures of 4-substituted 1-amino-1- (2-aminoa nilino)-2,4-dicyanobuta-1,3-diene(1) were described in the Light of Baldwin 's rule. A new route to 6-alkoxy-3-(2-benzimidazolinylidene)-5-cyano-2-imin o-2, 3-dihydropyridine(9) was also developed from 1,5-dinitrile(1).