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ChemInform Abstract: Homochiral 2,2′-Bis(oxazolyl)-1,1′-binaphthyls as Ligands for Copper(I) -Catalyzed Asymmetric Cyclopropanation.

✍ Scribed by Y. UOZUMI; H. KYOTA; E. KISHI; K. KITAYAMA; T. HAYASHI

Book ID
112038183
Publisher
John Wiley and Sons
Year
2010
Weight
27 KB
Volume
27
Category
Article
ISSN
0931-7597

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Homochiral 2,2′-bis(oxazolyl)-1,1′-binap
Homochiral 2,2′-bis(oxazolyl)-1,1′-binaphthyls as ligands for copper(I)-catalyzed asymmetric cyclopropanation
✍ Yasuhiro Uozumi; Hirokazu Kyota; Eiji Kishi; Kenji Kitayama; Tamio Hayashi 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 252 KB

Homochiral 2,2'-bis [4-(alkyl)oxazol-2-yl]-l,l'-binaphthyls, which possess both binaphthyl axial chirality and carbon centred chirality, were prepared from 1,1'-binaphthyl-2,2'-dicarboxylic acid and 2-alkyl-2-aminoethanols in high yields. Asymmetric cyclopropanation of styrene with diazoacetates in

ChemInform Abstract: Design and Preparat
ChemInform Abstract: Design and Preparation of 3,3′-Disubstituted 2,2′-Bis(oxazolyl)-1,1′-binaphthyls (boxax): New Chiral Bis(oxazoline) Ligands for Catalytic Asymmetric Wacker-Type Cyclization.
✍ Yasuhiro Uozumi; Hirokazu Kyota; Kazuhiko Kato; Masamichi Ogasawara; Tamio Hayas 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 33 KB 👁 1 views

Design and Preparation of 3,3'-Disubstituted 2,2'-Bis(oxazolyl)-1,1'binaphthyls (boxax): New Chiral Bis(oxazoline) Ligands for Catalytic Asymmetric Wacker-Type Cyclization. -Some new chiral ligands are prepared. Among them the ligand shown in entry A) is the most effective one for Wacker-type cycli