Journal of the American Chemical Society p. 8153 - 8156 (1988)
Update date:2022-08-11
Topics:
Hayashi, Tamio
Hayashizaki, Keiichi
Kiyoi, Takao
Ito, Yoshihiko
Cross-coupling of (2-methyl-1-naphthyl)magnesium bromide (1a) with 2-methyl-1-naphthyl bromide (2a) at -15 or 0 deg C in the presence of nickel catalyst prepared in situ from nickel bromide and (S)-1-<(R)-2-(diphenylphosphino)ferrocenyl>ethyl methyl ether (3a) gave high yield of (R)-(-)-2,2'-dimethyl-1,1'-binaphthyl (4a) in up to 95percent ee.Ferrocenylphosphine 3a was also effective for the reaction of 1a with 1-naphthyl bromide (2b) and that of (2-ethyl-1-naphthyl)magnesium bromide (1c) with 2b to give corresponding cross-coupling products in 83 and 77percent ee, respectively.
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