Journal of Organometallic Chemistry p. C19 - C22 (1990)
Update date:2022-08-11
Topics:
Bergdahl, Mikael
Nilsson, Martin
Olsson, Thomas
Conjugate addition of butylcopper/iodotrimethylsilane to naphthylbornyl crotonate (1) at -60 deg C gives 1-<1-(R)-endo-(1-naphthyl)>bornyl <(S)-3-methyl>heptanoate (2) in 93percent yield and 98percent diastereomeric excess.The addition of TMSI-activated butylcopper is faster at -60 deg C than that of lithium dibutylcuprate (LiBu2Cu).
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