TetraPh-Tol-BITIOPO: a new atropisomeric 3,3′-bithiophene based phosphine oxide as an organocatalyst in Lewis base-catalyzed Lewis acid mediated reactions
作者:Abbinante Vincenzo Mirco、Benaglia Maurizio、Rossi Sergio、Benincori Tiziana、Cirilli Roberto、Pierini Marco
DOI:10.1039/c9ob01297d
日期:——
catalyst was able to promote the allylation of aldehydes with allyltrichlorosilane in up to 98% yield and up to 96% enantiomeric excess (ee), and the direct aldol reaction to afford β-hydroxy ketones and β-hydroxy thioesters, with good chemical yields and modest stereochemical efficiency. Computational studies helped to elucidate and to rationalize the stereochemical outcome of the reactions catalyzed
Silver-Mediated Oxidative C–H/P–H Functionalization: An Efficient Route for the Synthesis of Benzo[<i>b</i>]phosphole Oxides
作者:Yun-Rong Chen、Wei-Liang Duan
DOI:10.1021/ja407373g
日期:2013.11.13
A Ag-mediated C-H/P-H functionalization reaction of arylphosphine oxides with internal alkynes was described for the direct preparation of benzo[b]phosphole oxides with a high yield. An unusual aryl migration on the P-atom derived from a C-P bond cleavage and a new C-P bond formation was also observed and demonstrated to proceed via the radical process.
描述了芳基氧化膦与内部炔烃的 Ag 介导的 CH/PH 官能化反应,用于以高产率直接制备苯并 [b] 磷氧化物。还观察到来自 CP 键断裂和新 CP 键形成的 P 原子上不寻常的芳基迁移,并证明是通过自由基过程进行的。