Four component synthesis of (Z)-4-alkoxy-1,3-dimethylalk-2-enyl methyl sulfones: on the intermediacy of sultines (3,6-dihydro-1,2-oxathiin-2-oxides) arising from suprafacial hetero-Diels-Alder additions of sulfur dioxide

The reactions of (E,E)-1-benzyloxy-2-methylpenta-1,3-diene (9) with 3,3-dimethyl-2-(trimethylsilyloxy)butene and (Z)-3-(trimethylsilyloxy)pent-2-ene in SO2 and a Lewis acid give silyl sulfinates that are quenched with Met to generate the corresponding (Z)-4-benzyloxy-1,3-dimethylalk-2-enyl methyl sulfones with unlike relative configuration at C-l and C-4 (by X-ray diffraction studies), in support of processes involving the intermediacy of a sultine arising from the suprafacial hetero-Diels-Alder addition of SO2 to diene 9. (C) 2001 Elsevier Science Led. All rights reserved.


Published in:
Tetrahedron Letters, 42, 4, 673-675
Year:
2001
ISSN:
0040-4039
Keywords:
Note:
Univ Lausanne, Chim Sect, BCH, CH-1015 Lausanne, Switzerland. Univ Lausanne, Inst Cristallog, BSP, CH-1015 Lausanne, Switzerland.
Laboratories:




 Record created 2005-11-09, last modified 2018-03-17


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