BABIPhos Family of Biaryl Dihydrobenzooxaphosphole Ligands for Asymmetric Hydrogenation
作者:Guisheng Li、Olga V. Zatolochnaya、Xiao-Jun Wang、Sonia Rodríguez、Bo Qu、Jean-Nicolas Desrosiers、Hari P. R. Mangunuru、Soumik Biswas、Daniel Rivalti、Shuklendu D. Karyakarte、Joshua D. Sieber、Nelu Grinberg、Ling Wu、Heewon Lee、Nizar Haddad、Daniel R. Fandrick、Nathan K. Yee、Jinhua J. Song、Chris H. Senanayake
DOI:10.1021/acs.orglett.8b00139
日期:2018.4.6
Novel bidentate phosphine ligands BABIPhos featuring a biaryl bis-dihydrobenzooxaphosphole core are presented. Their synthesis was achieved via Pd-catalyzed reductive homocoupling of dihydrobenzooxaphosphole aryl triflates. An efficient route toward various analogues was also established, giving access to phosphines with different electronic and steric properties. The newly obtained ligands demonstrated
提出了具有联芳基双-二氢苯并恶唑膦核的新型双齿膦配体BABIPhos。它们的合成是通过Pd催化的二氢苯并氧杂磷酰基芳基三氟甲磺酸酯的还原均偶联来实现的。还建立了通往各种类似物的有效途径,从而获得了具有不同电子和空间特性的膦。新获得的配体在Rh催化的二取代和三取代的酰胺的不对称加氢中显示出高效率和选择性。这类新的配体是对先前描述的双齿苯并恶唑磷配体BIBOP的补充。