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2005
Benzothiophene derivatives
R 0100
Application of Directed Metalation in Synthesis. Part 7. Synthesis of Suitably
Benzo[b]thiophenes as Key Intermediates in the Synthesis of
25- 108 Functionalized
Benzothienopyranones. — Two alternative routes are described for the synthesis of
2-acetyl-3-hydroxybenzothiophenes (III) and (VIII) and their following cyclization to
benzothienopyranones (IV) and (X). — (PRADHAN, T. K.; DE*, A.; Tetrahedron
Lett. 46 (2005) 9, 1493-1495; Dep. Org. Chem., Indian Assoc. Cultiv. Sci., Jadavpur,
Calcutta 700 032, India; Eng.) — Mais
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