Regio- and stereoselective homoallylation of saturated aldehydes and ketones to give bishomoallyl alcohols 1,3-anti-1 is achieved with [Ni(acac) ] (cat.) and Et Zn [Eq. (a)]. This new catalyst system thus complements the previously reported combination of [Ni(acac) ] with Et B, which offers advantages in the homoallylation of unsaturated and aromatic aldehydes. acac=acetylacetonato.
Die regio‐ und stereoselektive Homoallylierung von gesättigten Aldehyden und Ketonen, die Bishomoallylalkohole 1,3‐anti‐1 liefert, wird mit [Ni(acac)2] und Et2Zn erreicht [Gl. (a)]. Dieses neue katalytische System ergänzt die zuvor beschriebene Kombination von [Ni(acac)2] und Et3B, die vorteilhaft bei der Homoallylierung ungesättigter und aromatischer Aldehyde ist. acac=acetylacetonato.
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