Pd(II)-Catalyzed Direct Sulfonylation of Benzylamines Using Sodium Sulfinates
摘要:
A Pd(II)-catalyzed direct sulfonylation of benzylamines with sodium sulfinates using a removable bidentate directing group is illustrated. The transformation is highly regioselective and tolerates wide functional groups. The mechanistic study reveals that radical species are involved in this reaction. This method delivers a direct synthetic strategy to obtain highly functionalized sulfonylated benzylamines.
Palladium-Catalyzed Alkenylation and Alkynylation of <i>ortho</i>-C(sp<sup>2</sup>)–H Bonds of Benzylamine Picolinamides
作者:Yingsheng Zhao、Gang He、William A. Nack、Gong Chen
DOI:10.1021/ol301214u
日期:2012.6.15
An efficient functionalization of ortho-C(sp2)–H bonds of picolinamide (PA)-protected benzylamine substrates with a range of vinyl iodides as well as acetylenic bromide is reported. ortho-Phenyl benzoic acid (oPBA) acts as an effective promoter in this reaction system. This method provides a practical strategy to access highly functionalized benzylamine compounds for organic synthesis.
Palladium-Catalyzed Alkylation of <i>ortho</i>-C(sp<sup>2</sup>)–H Bonds of Benzylamide Substrates with Alkyl Halides
作者:Yingsheng Zhao、Gong Chen
DOI:10.1021/ol201930e
日期:2011.9.16
A highly efficient and generally applicable method has been developed to functionalize the ortho-C(sp(2)) H bonds of picolinamide (PA)-protected benzylamine substrates with a broad range of beta-H-containing alkyl halides. Sodium triflate has been identified as a critical promoter for this reaction system. The PA group can be easily installed and removed under mild conditions. This method provides a new strategy to prepare highly functionalized benzylamines for the synthesis of complex molecules.
Strupinska, Marzanna; Rostafinska-Suchar, Grazyna; Stables, James. P., Acta poloniae pharmaceutica, 2009, vol. 66, # 2, p. 155 - 159
作者:Strupinska, Marzanna、Rostafinska-Suchar, Grazyna、Stables, James. P.、Paruszewski, Ryszard