Solvent-Dependent Reactions for the Synthesis of β-Keto-Benzo-δ-Sultone Scaffolds via DBU-Catalyzed O-Sulfonylation/Intramolecular Baylis―Hillman/1,3-H Shift or Dehydration Tandem Sequences
In: Journal of organic chemistry, Jg. 76 (2011), Heft 24, S. 9975-9982
academicJournal
- print, 31 ref
Zugriff:
We have developed a solvent-dependent method for the synthesis of novel benzo-δ-sultone scaffolds. A variety of benzylbenzo[e] [1,2]oxathiin-4(3H)-one-2,2-dioxides were obtained in high yields in DMF using a one-pot, DBU-catalyzed condensation of 2-hydroxybenzaldehydes with a number of (E)-2-phenylethenesulfonyl chlorides. On the other hand, the initially prepared 2-formylphenyl-(E)-2-phenylethenesulfonate derivatives underwent DBU-catalyzed reactions to a series of 3-[methoxy-(phenyl)methyl]benzo[e][1,2]oxathiine-2,2-dioxides in moderate to good yields in MeOH. These reactions presumably proceed via DBU-catalyzed O-sulfonylation/intramolecular Baylis―Hillman/ 1,3-H shift or dehydration tandem sequences, respectively.
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Solvent-Dependent Reactions for the Synthesis of β-Keto-Benzo-δ-Sultone Scaffolds via DBU-Catalyzed O-Sulfonylation/Intramolecular Baylis―Hillman/1,3-H Shift or Dehydration Tandem Sequences
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Autor/in / Beteiligte Person: | GHANDI, Mehdi ; HASANI BOZCHELOEI, Abolfazl ; HADI NAZARI, Seyed ; SADEGHZADEH, Masoud |
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Zeitschrift: | Journal of organic chemistry, Jg. 76 (2011), Heft 24, S. 9975-9982 |
Veröffentlichung: | Washington, DC: American Chemical Society, 2011 |
Medientyp: | academicJournal |
Umfang: | print, 31 ref |
ISSN: | 0022-3263 (print) |
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