Catalytic Henryreactions of aliphatic aldehydes and prochiral nitro compounds were investigated usingcopper(II) complexes of 14 C1‐symmetrical ligands derived from (1R,2R)(−)‐diaminocyclohexane. β‐Nitro alcohols with syn:anti ratios of up to 5.7 and excellent ee values for both diastereosimers were obtained.
使用衍生自(1 R,2 R)(-)-二氨基环己烷的14 C 1对称配体的铜(II)配合物研究了脂肪醛和前手性硝基化合物的催化亨利反应。β硝基醇与顺式:反向上的比率5.7和优异的ee值获得两个diastereosimers值。
When is an imine not an imine? Unusual reactivity of a series of Cu(ii) imine-pyridine complexes and their exploitation for the Henry reaction
作者:Christine J. Cooper、Matthew D. Jones、Simon K. Brayshaw、Benjamin Sonnex、Mark L. Russell、Mary F. Mahon、David R. Allan
DOI:10.1039/c0dt01740j
日期:——
In this paper we report the synthesis and solid-state structures for a series of pyridine based Cu(II) complexes and preliminary data for the asymmetric Henry reaction. Interestingly, the solid-state structures indicate the incorporation of an alcohol into one of the imine groups of the ligand, forming a rare α-amino ether group. The complexes have been studied viasingle crystal X-ray diffraction,