Tetrahedron Letters p. 4971 - 4974 (1983)
Update date:2022-07-31
Topics:
Oppolzer, Wolfgang
Moretti, Robert
Godel, Thierry
Meunier, Anne
Loeher, Heinz
nBu3P- or cyanide-stabilized RCu.BF3 (R=Me, 4-Me-3-pentenyl) undergo efficient 1,4-additions to neopentylether-shielded trans-enoates.Thus chiral β-substituted carboxylic acids e.g. (S)-citronellic acid were obtained in high e.e. (Schemes 2 and 4).
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