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Synthesis of methyl 3-amino-4-aryl(or methyl)sulfonyl-2-thiophenecarboxylates from 3-alkoxy-2-aryl(or methyl)-sulfonylacrylonitriles

✍ Scribed by Chad E. Stephens; Matthew B. Price; J. Walter Sowell Sr.


Book ID
102893937
Publisher
Journal of Heterocyclic Chemistry
Year
1999
Tongue
English
Weight
570 KB
Volume
36
Category
Article
ISSN
0022-152X

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✦ Synopsis


Abstract

The synthesis of a series of methyl 3‐amino‐4‐aryl(or methyl)sulfonylthiophene‐2‐carboxylates by reaction of 3‐alkoxy‐2‐aryI(or methyl)sulfonylacrylonitriles with methyl thioglycolate in the presence of triethylamine is described. Hydrolysis/decarboxylation of the ester at the 2‐position and acylation of the resulting amine represents a convenient route to 4‐arylsulfonyl‐3‐carboxamidothiophenes. Attempted acylation of a title aminothiophene under standard conditions was unsuccessful.


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ChemInform Abstract: An Efficient Synthe
✍ Kazuhiro Kobayashi; Yuko Egara; Shuhei Fukamachi; Hisatoshi Konishi 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 32 KB 👁 1 views

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