DNA-based asymmetric organometallic catalysis in water
作者:Jens Oelerich、Gerard Roelfes
DOI:10.1039/c3sc00100h
日期:——
Here, the first examples of DNA-based organometallic catalysis in water that give rise to high enantioselectivities are described. Copper complexes of strongly intercalating ligands were found to enable the asymmetric intramolecular cyclopropanation of α-diazo-β-keto sulfones in water. Up to 84% ee was achieved, in the presence of salmon testes DNA as the only source of chirality, using dipyrido[3
在这里,第一个基于DNA的有机金属催化实例 水描述了引起高对映选择性的化合物。发现强嵌入配体的铜配合物使α-重氮-β-酮砜的不对称分子内环丙烷化成为可能。水。使用双吡啶并[3,2- a:2',3'- c ]吩嗪(dppz)衍生物作为配体,在鲑鱼睾丸DNA作为唯一手性来源的情况下,达到了高达84%的ee 。
Monteiro, H. J., Synthetic Communications, 1987, vol. 17, # 8, p. 983 - 992
作者:Monteiro, H. J.
DOI:——
日期:——
Electronic effects of aryl-substituted bis(oxazoline) ligands on the outcome of asymmetric copper-catalysed C–H insertion and aromatic addition reactions
作者:Catherine N. Slattery、Sarah O’Keeffe、Anita R. Maguire
DOI:10.1016/j.tetasy.2013.09.009
日期:2013.10
The effect of the modification of bis(oxazoline) ligands on the outcome of copper-catalysed C-H insertion and aromatic addition reactions is described. In general, these reactions display minimum sensitivity in terms of enantiocontrol to variation of the electronic properties of the aryl moiety of the ligand however, some influence is observed for C-H insertions employing naphthyl-substituted bis(oxazolines) and for aromatic addition reactions of biphenyl diazo ketone substrates. The synthesis of the modified bis(oxazolines), which include four novel structures, is also described. (C) 2013 Elsevier Ltd. All rights reserved.
Synthesis of α-Phenylsulfonyl cyclopentanones by intramolecular carbenoid cyclization of α-Diazo-β-keto phenylsulfones
作者:Hugo J. Monteiro
DOI:10.1016/s0040-4039(00)96326-3
日期:——
KENNEDY, MICHAEL;MCKERVEY, M. ANTHONY;MAGUIRE, ANITA R.;ROOS, GREGORY H., J. CHEM. SOC. CHEM. COMMUN.,(1990) N, C. 361-362
作者:KENNEDY, MICHAEL、MCKERVEY, M. ANTHONY、MAGUIRE, ANITA R.、ROOS, GREGORY H.