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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 26, 1996 - Issue 22
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Original Articles

A convenient Synthesis of 6-Substituted-2,2-Dimethyl-2H-1-Benzopyrans

Pages 4267-4273 | Received 12 Jun 1996, Published online: 19 Aug 2006

References

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  • In attempt to prepare 6-phenylsulfonylchromene via Claisen rearrangement, we could not synthesize the required aryl propargyl ether (6) under Godfrey's conditions (Scheme 3). The chromene can be prepared by selective oxidation of 6-phenylthiochromene (product in entry 3, Table 1) with mCPBA
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