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Regioselective Synthesis of Thieno[3,2-c][1]benzopyran-4-ones by Thio-ClaisenRearrangement

✍ Scribed by Krishna C. Majumdar; Anindita Biswas


Book ID
106213384
Publisher
Springer Vienna
Year
2004
Tongue
English
Weight
179 KB
Volume
135
Category
Article
ISSN
0026-9247

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πŸ“œ SIMILAR VOLUMES


Studies on sulfoxide rearrangements: reg
✍ K.C Majumdar; S.K Ghosh πŸ“‚ Article πŸ“… 2002 πŸ› Elsevier Science 🌐 French βš– 131 KB

Hitherto unreported 3-(aryloxyacetyl)-2,3-dihydrothieno[3,2-c][1] benzopyran-4-ones 5a-f were synthesised in 70-75% yields by the application of the sulfoxide rearrangement of 4-(4-aryloxybut-2-ynylthio)[1]benzopyran-2-ones 4a-f. The substrates 4a-f were synthesised by phase-transfer-catalysed alkyl