Tetrahedron Asymmetry p. 3939 - 3946 (1997)
Update date:2022-08-11
Topics:
Wada, Makoto
Takahashi, Toshikazu
Domae, Terutomo
Fukuma, Tomohiro
Miyoshi, Norikazu
Smith, Keith
Bismuth(III) chloride (BiCl3) was found to work efficiently as a versatile catalyst for cyanation of aldehydes with trimethylsilyl cyanide to afford the corresponding cyanohydrins in high yields. Triphenylbismuthan (Ph3Bi) is also effective. The reaction has been applied to the asymmetric cyanation of a variety of aldehydes in high yields with moderate to good enantioselectivities by use of a chiral bismuth catalyst prepared in situ from BiCl3 and (2R,3R)-(+)-diethyl tartrate.
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