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ChemInform Abstract: Access to 1,2-Diketones by an Unusual Radical Cascade.

โœ Scribed by Rama Heng; Samir Z. Zard

Publisher
John Wiley and Sons
Year
2011
Weight
27 KB
Volume
42
Category
Article
ISSN
0931-7597

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An Unusual and Highly Efficient Access to Thieno[2,3-b]benzothiopyran Structures. -A direct method was studied to transform the xanthates (III) to the benzothiepine system (V). However a novel base-induced domino cyclization gives dihydrothieno[2,3-b]benzothiopyran-4ones (IV) instead.