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[2,3]-Wittig Sigmatropic Rearrangement of γ-Allyloxy-β-enaminoesters.

✍ Scribed by Isabelle Pevet; Christophe Meyer; Janine Cossy

Publisher
John Wiley and Sons
Year
2003
Weight
118 KB
Volume
34
Category
Article
ISSN
0931-7597

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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