Oxygen heterocycles by sulphur ylide annulation: Synthesis of 3,4-dihydro-2H,5H-pyrano[3,2-C][1] benzofyran-5-ones by dimethylsulphoxonium methylide
Heterocycles, ISSN: 1881-0942, Vol: 22, Issue: 2, Page: 245-248
1984
- 5Citations
- 2Captures
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Article Description
3,4-Dihydro-2-hydroxymethyl-2H,5H-pyrano[3,2-c][1]benzopyran-5-ones are the main products of the reaction of dimethylsulphoxonium methylide on Michael adducts of 4-hydroxycoumarins and α,β-unsaturated ketones. Minor quantities of 3,4-dihydro-2-hydroxymethyl-2H,5H-pyrano[2,3-b][1]benzopyran-5-ones are also sometimes obtained.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84986432250&origin=inward; http://dx.doi.org/10.3987/r-1984-02-0245; https://triggered.stanford.clockss.org/ServeContent?doi=10.3987%2Fr-1984-02-0245; https://dx.doi.org/10.3987/r-1984-02-0245; https://chooser.crossref.org/?doi=10.3987%2FR-1984-02-0245
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