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Synthese einer Reihe von 3-Oxo-2-oxabicyclo[2.2.2]oct-7-en-Derivaten und Versuche zu deren Umwandlung in 3-Oxo-2-oxabicyclo[2.2.2]octa-5,7-dien

✍ Scribed by Pfaff, Eberhard ;Plieninger, Hans

Publisher
Wiley (John Wiley & Sons)
Year
1982
Tongue
English
Weight
864 KB
Volume
115
Category
Article
ISSN
0009-2940

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✍ Michael Roman Gmünder; Conrad Hans Eugster 📂 Article 📅 1990 🏛 John Wiley and Sons 🌐 German ⚖ 896 KB

Starting from our recently described synthon (+)-24, the enantiomerically pure 3,6:4,5:3',6':4,5'-tetraepoxy-4,5,4,5'-tetrahydro-&,~-carotene (34) and its 15,15'-didehydro analogue 32 were synthesized in eleven and nine steps, respectively (Scheme 4 ) . Chiroptical data show, in contrast to the pare