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Asymmetric synthesis of chiral spiro bis(isoxazoline) and spiro (isoxazole–isoxazoline) ligands

✍ Scribed by Kazuhiro Takenaka; Toyohiro Nagano; Shinobu Takizawa; Hiroaki Sasai

Book ID
108284552
Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
681 KB
Volume
21
Category
Article
ISSN
0957-4166

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Synthesis of new chiral bis(isoxazoline)
Synthesis of new chiral bis(isoxazoline) ligands containing spiro[5.5]undecane skeleton
✍ Midori A. Arai; Minori Kuraishi; Takayoshi Arai; Hiroaki Sasai 📂 Article 📅 2002 🏛 John Wiley and Sons 🌐 English ⚖ 335 KB 👁 1 views

New chiral bis(isoxazoline) ligands bearing a spiro[5.5]undecane skeleton were designed and synthesized in five steps from diethyl malonate (3). These ligands showed a coordinating ability to Cu(II) as chiral ligands. A complex of (+)-(M\*,S\*,R\*)-[5.5]-SPRIX 2b and Cu(OTf)(2) catalyzed the conjuga