在本文中,我们报道了由Cp * Ir III催化实现的烯丙基CH键的氧化还原中性,分子间和高度分支选择性酰胺化。将各种容易获得的羧酸转化为相应的二恶唑酮,并以高收率和选择性将其与末端和内部烯烃有效偶联。机理研究支持亲核性Ir III-烯丙基中间体的形成,而不是将Ir-nitrenoid物种直接插入烯丙基CH键中。
Amino Acid-Based Reoxidants for Aminohydroxylation: Application to the Construction of Amino Acid-Amino Alcohol Conjugates
作者:Timothy J. Donohoe、Cedric K. A. Callens、Aida Flores、Stefanie Mesch、Darren L. Poole、Ishmael A. Roslan
DOI:10.1002/anie.201103293
日期:2011.11.11
A viable nitrogen source for the aminohydroxylation reaction of terminal alkenes: By adding a N‐O based reoxidant onto an amino acid acyl carbon atom, compounds were obtained that facilitated catalytic turnover and also promoted the conjugation of an amino acid with an alkene. High levels of regioselectivity were observed, as well as good stereoselectivity induced by catalytic amounts of a chiral ligand