Tetrahedron Asymmetry p. 1403 - 1412 (1991)
Update date:2022-08-29
Topics:
Mikami, Koichi
Sawa, Eiji
Terada, Masahiro
The chiral binaphthol-derived titanium perchlorate (or triflate) is shown to serve efficiently as an asymmetric catalyst for the ene cyclization of type <3,4>exo,exo and <2,4>exo',exo involving α-alkoxy aldehyde as an internal enophile to afford the 6- and 7-membered cyclic ethers in high enantiomeric purity.
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