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Structure of Diels-Alder reaction adducts of certain propellanes with 4-phenyl-1,2,4-triazoline-3,5-dione

✍ Scribed by Agmon, I. ;Ashkenazi, P. ;Kaftory, M.

Book ID: 114509279
Publisher: International Union of Crystallography
Year: 1992
Tongue: English
Weight: 616 KB
Volume: 48
Category: Article
ISSN: 0108-2701
DOI: 10.1107/s0108270192001069

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## Abstract Two isomeric propellane epoxides **1a** and **1b** containing a cyclohexadiene ring are attacked by the title dienophile as predicted, __syn__ to the five‐membered ether ring whose α‐hydrogens exert less repulsion than the α‐epoxy hydrogens or the epoxide oxygen, respectively, of the cy

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