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Synthesis and structural characterization of substituted thieno[2,3-b]pyridines from o-chloroformyl-1,4-dihydropyridines

✍ Scribed by Margarita Suárez; Estael Ochoa; Beatriz Pita; Remberto Espinosa; Leandro González; Nazario Martín; Margarita Quinteiro; Carlos Seoane; Jose L. Soto

Publisher
Journal of Heterocyclic Chemistry
Year
1997
Tongue
English
Weight
331 KB
Volume
34
Category
Article
ISSN
0022-152X

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✦ Synopsis

Abstract

Novel 4,7‐dihydrothieno[2,3‐b]pyridines 10a‐d have been prepared in a one step procedure from the readily available o‐chloroformyl substituted 1,4‐dihydropyridines 9a‐d and ethyl mercaptoacetate in good yields. Semiempirical calculations reveal a favoured geometry with a boat conformation in the dihydropyridine system and a planar thieno ring. The calculated charge density values for the olefmic carbons (C5 and C6) are in agreement with the experimental push‐pull effect observed in the ^13^C nmr.

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ChemInform Abstract: Synthesis and Struc
ChemInform Abstract: Synthesis and Structural Characterization of Substituted Thieno(2,3-b) pyridines from o-Chloroformyl-1,4-dihydropyridines.
✍ M. SUAREZ; E. OCHOA; B. PITA; R. ESPINOSA; L. GONZALEZ; N. MARTIN; M. QUINTEIRO; 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 27 KB 👁 2 views

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