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Pyrido[2,3- d ]pyrimidine-2,7-dithiol in heterocyclic synthesis: Synthesis and characterization of several new fused pyridopyrimidine heterocycles

✍ Scribed by Elneairy, Mohamed A. A.; Gad-Elkareem, Mohamed A. M.; Taha, Adel M.

Book ID: 121280810
Publisher: Taylor and Francis Group
Year: 2005
Tongue: English
Weight: 385 KB
Volume: 26
Category: Article
ISSN: 1741-5993
DOI: 10.1080/17415990500356048

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## Abstract 6‐Aminopyridine‐2(1H)thiones **1** reacting with α‐halo‐compounds **2a–c** afforded the alkylthiopyridine derivatives **3a–c** which in turn cyclized to the corresponding thieno[2,3‐b]pyridine derivatives **4a–c**. Several thieno[2,3‐b]pyridine derivatives **7, 16, 19**, pyrido[3′,2′:4,