Chiral Tripod Ligands with Phosphorus and Sulfur Donors. Synthesis and Complex Chemistry
具有磷和硫供体的手性三脚架配体。合成与复杂化学
Triphos derivatives and diphosphines as ligands in the ruthenium-catalysed alcohol amination with NH<sub>3</sub>
作者:N. Nakagawa、E. J. Derrah、M. Schelwies、F. Rominger、O. Trapp、T. Schaub
DOI:10.1039/c5dt04870b
日期:——
triphos derivatives with electron-donating functional group were synthesized and used as ligands in the Ru-catalysed alcohol amination with NH3. The triphos derivatives are effective for the formation of primary amines. On the other hand, if hemilabile diphosphines as tridentate ligands are used, mixtures of secondary-along with primary amines are obtained. It was found that even simple diphosphines can
3-Diphenylphosphino-2-(diphenylphoshino)methyl-2-methylpropyl acetate acted as an efficient ligand for a Rh catalyst, achieving cross-coupling between arylzinc compounds bearing electron-withdrawing groups and alkyl electrophiles. The beneficial effect of the tripodal ligand and such aryl nucleophiles was discussed with regard to the specificity of the Rh catalysis.