SCHEDULED MAINTENANCE
The synthesis of 1,4-dihydrofurano[3,4-d]-3,2-oxathiine 2-oxide 8, 5,7-dimethyl-1,4-dihydrothieno[3,4-d]-3,2-oxathiine 2-oxide 9 and 1,4-dihydro-6-tosylpyrrolo[3,4-d]-3,2-oxathiine 2-oxide 10, precursors for nonclassical heteroaromatic o-quinodimethanes, and their application in the Diels–Alder reactions are reported.
W. Chung, W. Lin, W. Liu and L. Chen, J. Chem. Soc., Chem. Commun., 1995, 2537 DOI: 10.1039/C39950002537
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