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Total synthesis of anthrasteroids—III : The preparation of some 3-phenyl-2,4-diaza-anthraestranes

✍ Scribed by K. Wiedhaup; H.O. Huisman


Book ID
103397421
Publisher
Elsevier Science
Year
1968
Tongue
French
Weight
611 KB
Volume
24
Category
Article
ISSN
0040-4020

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✍ Rudolf O. Duthaler; Veronica Scherrer 📂 Article 📅 1984 🏛 John Wiley and Sons 🌐 German ⚖ 635 KB

## Abstract 1,2,3,4‐Tetrahydrodibenzofuran‐1‐ones were obtained by __Michael__ addition of 1,3‐cyclohexadione (**2**) to __o__‐benzoquinone (**3**) and to __p__‐benzoquinones **8** and **11** (__Scheme 2__). In addition to the expected 7,8‐disubstituted adduct **14**, the ZnCl~2~‐catalyzed reaction