Chiral [2.2.2] Dienes as Ligands for Rh(I) in Conjugate Additions of Boronic Acids to a Wide Range of Acceptors
作者:Christian Defieber、Jean-François Paquin、Sonia Serna、Erick M. Carreira
DOI:10.1021/ol048240x
日期:2004.10.1
[reaction: see text] We document a series of investigations that led to new substituted [2.2.2]-diene ligands which display high selectivity in Rh(I)-catalyzed conjugate addition reactions to substrates not previously examined with diene ligands. Moreover, we disclose an unexpected, interesting effect that results from the introduction of a third C=C onto the ligand scaffold (cf. 1).
[反应:见正文]我们记录了一系列研究,这些研究导致了新的取代的[2.2.2]-二烯配体,在Rh(I)催化的共轭加成反应中,对先前未用二烯配体检查的底物表现出高选择性。此外,我们公开了由于在配体支架上引入了第三个C = C而产生的出乎意料的有趣效果(参见1)。