E. M. O. Yeboah, S. O. Yeboah and G. S. Singh, “Recent Applications of Cinchona Alkaloids and their Derivatives as Catalysts in Metal-free Asymmetric Synthesis,” Tetrahedron, Vol. 67, No. 10, 2011, pp. 1725-1762. doi:10.1016/j.tet.2010.12.050

has been cited by the following article:

• TITLE: Facile Synthesis of Novel Chiral Bicyclic Thioureas and Their Crystal Structures

  AUTHORS: Ping An Wang, Hui Fang Nie, Lin Jie Yan, Sheng Yong Zhang

  KEYWORDS: Chiral Bicyclic Thiourea; cis-2, 5-Disubstituted Pyrrolidine; X-Ray Analysis

  JOURNAL NAME: International Journal of Organic Chemistry, Vol.2 No.1, March 15, 2012

  ABSTRACT: The novel well-defined chiral bicyclic thioureas based on enantiopure unsymmetric cis-2,5-disustituted pyrrolidine skeleton were firstly synthesized and fully characterized by their 1H NMR, 13C NMR and HRMS. Their absolute configurations were also determined by single-crystal X-ray analysis.