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Cover Picture: Synthesis of a Novel Enantiopure Spiro-B-norestradiol Analogue by Multiple Pd-Catalyzed Transformations (Eur. J. Org. Chem. 20/2004)

✍ Scribed by Lutz F. Tietze; J. Matthias Wiegand; Carsten A. Vock

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
50 KB
Volume
2004
Category
Article
ISSN
1434-193X

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Synthesis of a Novel Enantiopure Spiro-B
Synthesis of a Novel Enantiopure Spiro-B-norestradiol Analogue by Multiple Pd-Catalyzed Transformations
✍ Lutz F. Tietze; J. Matthias Wiegand; Carsten A. Vock 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 150 KB 👁 1 views

## Abstract The novel tetracyclic spiro compound **13** was synthesized by the use of two subsequent Pd‐catalyzed reactions. Firstly, the __ortho__‐bromobenzyl chloride **1** was coupled with the enantiopure boronic ester **8**, obtained from the Hajos−Wiechert ketone in a chemoselective Suzuki‐typ