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Two Stereoisomeric [4.5.5.5]Fenestranes Formed by Intramolecular [2 + 2] Cycloaddition

โœ Scribed by Reinhart Keese


Publisher
John Wiley and Sons
Year
1992
Tongue
English
Weight
325 KB
Volume
31
Category
Article
ISSN
0044-8249

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Intramolecular [4+2]-cycloaddition react
โœ John D Ginn; Stephen M Lynch; Albert Padwa ๐Ÿ“‚ Article ๐Ÿ“… 2000 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 85 KB

Cyclic 2-thiomethyl-5-amidofurans possessing tethered p-bonds were prepared by a dimethyl(methylthio) sulfonium tetrafluoroborate (DMTSF) induced cyclization of various amido dithioacetals. Upon heating, these systems undergo an intramolecular 4+2-cycloaddition reaction. The initially formed Diels-A