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ChemInform Abstract: Enantioselective [1,2] Wittig Rearrangement Using an External Chiral Ligand.

โœ Scribed by Katsuhiko Tomooka; Kyoko Yamamoto; Takeshi Nakai

Publisher
John Wiley and Sons
Year
2010
Weight
29 KB
Volume
31
Category
Article
ISSN
0931-7597

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External chiral ligand-induced enantiose
External chiral ligand-induced enantioselective versions of the [2,3]-Wittig sigmatropic rearrangement
โœ Katsuhiko Tomooka; Nobuyuki Komine; Takeshi Nakai ๐Ÿ“‚ Article ๐Ÿ“… 2000 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 144 KB ๐Ÿ‘ 2 views

The external chiral ligand-induced enantioselective [2,3]-Wittig rearrangements of crotyl benzyl ethers and crotyl propargylic ethers are described. The most notable is that treatment of (E)-crotyl propargylic ethers with a t-butyllithium/(S;S)-bis(oxazoline) complex provides a relatively high enant