报道了一种简便的镍催化方法来实现合成有用的氨基磺酸芳基酯和氨基甲酸酯的胺化。与大多数 Ni 催化的胺化反应相反,这种用户友好的方法依赖于空气稳定的 Ni(II) 预催化剂,当它与温和的还原剂一起使用时,可以有效地以良好到优异的产率提供胺化产物。该方法的范围就两个偶联伙伴而言都是广泛的,并且包括杂环底物。
作者:Stephen D. Ramgren、Amanda L. Silberstein、Yang Yang、Neil K. Garg
DOI:10.1002/anie.201007325
日期:2011.2.25
Broad in scope: The first amination of arylsulfamates, which are attractive cross‐coupling partners, particularly for multistep syntheses, was achieved by using a nickel catalyst. The method provides a versatile means to use simple derivatives of phenol as precursors to polysubstituted aryl amines, as exemplified by a concise synthesis of the antibacterial drug linezolid (see scheme).
Star-like fluorene based polyamines: non-conjugated building blocks for light-harvesting materials
作者:K.R. Justin Thomas、Jiann T. Lin、Chien-Min Tsai、Hong-Cheu Lin
DOI:10.1016/j.tet.2006.02.001
日期:2006.4
blue emissive while the pyrenylamine based compound emits yellow-green color. We demonstrate a possibility of using blue-emitting fluorenederivatives (2 and 4) blended with poly(N-vinylcarbazole) (PVK) to fabricate organic light emitting diodes (OLEDs). Emissions in the EL devices purely originated from the fluorenederivatives alone (blue) are contaminated with those of complex species (electromer/electroplex)
Embodiments of the invention provide methods and materials for chemical cross-coupling reactions that utilize aryl alcohol derivatives as cross-coupling partners. Embodiments of the invention include methods for the amination of aryl sulfamates and carbamates, which are attractive cross-coupling partners, particularly for use in multistep synthesis. Illustrative embodiments include versatile means to use simple derivatives of phenol as precursors to polysubstituted aryl amines, as exemplified by a concise synthesis of the antibacterial drug linezolid.