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[4+3] Cycloadducts from Lewis Acid Mediated Reactions of Acroleins with Cyclopentadiene

โœ Scribed by Barbara Niess; H. Martin R. Hoffmann

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
920 KB
Volume
44
Category
Article
ISSN
0044-8249

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A crude, crystalline mixture 20a/20b (m.p. 102-103") was treated in analogous manner as that obtained from the reaction of cyclopentadiene with dienophile 2. 1,4-Di-O-tosyl-2,3-0-isopropylidene-~-threitol in y-pipecoline was refluxed for 3 h, and then the resulting product was hydrolyred to afford 1