A SYNTHESIS OF HETEROCYCLIC RING-SYSTEMS - PYRIDO[3',2'-4,5]THIENO[2,3-B]PYRROLIZINE AND 4,5][3',2'-4,5]DITHIENO[2,3-B'-2,3-B]DIPYRROLIZINE

Authors
PEINADOR C VEIGA C VILAR J QUINTELA JM
Citation
C. Peinador et al., A SYNTHESIS OF HETEROCYCLIC RING-SYSTEMS - PYRIDO[3',2'-4,5]THIENO[2,3-B]PYRROLIZINE AND 4,5][3',2'-4,5]DITHIENO[2,3-B'-2,3-B]DIPYRROLIZINE, Heterocycles, 38(6), 1994, pp. 1299-1305
Citations number
37
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Heterocycles → ACNP
ISSN journal
03855414
Volume
38
Issue
6
Year of publication
1994
Pages
1299 - 1305
Database
ISI
SICI code
0385-5414(1994)38:6<1299:ASOHR->2.0.ZU;2-C
Abstract
A synthesis for two new polycyclic heterocyclic ring systems is report ed. Cyclization of pyrrolidinocarboxamide derivatives of ethyl 3-(pyrr ol-1-yl)thieno[2,3-b]pyridine-2-carboxylate (4) and ethyl )dithieno[3' ,2'-e:2,3-b]pyridine-2,6-dicarboxylate (11) afford iminium salts that were transformed into the new heteropolycyclic compounds (6) and (13), respectively.