Synthesis and Characterization of Monoaminophosphine, Bis(Amino)Phosphine Derivatives, and their Metal Complexes
作者:Özlem Sarıöz、Sena Öznergiz
DOI:10.1080/15533174.2011.568464
日期:2011.7.1
Functionalized monoaminophosphine of the type Ph2PNR2 (1 and 3) and bis(amino)phosphine of the type PhP(NR2)2 (2) have been synthesized by treating Ph2PCl or PhPCl2 with corresponding amines. Ligands react with aqueous hydrogen peroxide, elemental sulfur, or selenium to give the corresponding chalcogenides in good yield. The metalcomplexes of the aminophosphines have been obtained. All of the compounds
Regio- and Diastereoselective Preparation of Tetrahydrobenzo[<i>c</i>]-1-aza-2λ<sup>5</sup>-phospholes through Dearomatization Cyclization of Lithiated <i>N</i>-Benzyl-<i>N</i>-alkyl(diphenyl)phosphinamides. Synthesis of γ-(<i>N</i>-Alkylamino)phosphinic Acids
作者:Ignacio Fernández、Fernando López Ortiz、Amador Menéndez Velázquez、Santiago García Granda
DOI:10.1021/jo025587+
日期:2002.5.1
A study of the protonation of the cycloadducts derived from the dearomatization reaction of lithiated N-alkyl-N-benzyldiphenylphosphinamides has been carried out. The regio- and stereoselectivity of the process has been analyzed in terms of the size of the N-alkyl substituent, the acidity and size of the protonating reagent, and the cosolvent used. The optimization of these variables allowed the preparation of tetrahydrobenzo[c]-1-aza-2lambda(5)-phospholes containing a 1,3-cyclohexadiene or 1,4-cyclohexadiene system with moderate to excellent regio- and stereocontrol. The heterocycles were readily hydrolyzed, affording gamma-(N-alkylamino)diphenylphosphinic acids with the functionalities linked to a cyclohexadiene substructure.