1244061-69-5Relevant academic research and scientific papers
Organocatalytic asymmetric conjugate addition of malonates to 3-nitro-2H-chromenes
Nie, Shao-Zhen,Hu, Zhi-Peng,Xuan, Yi-Ning,Wang, Jin-Jia,Li, Xue-Ming,Yan, Ming
, p. 2055 - 2059 (2010)
The conjugate addition of malonates to 3-nitro-2H-chromenes has been studied in the presence of a number of chiral organocatalysts. A bifunctional thiourea-tertiary amine was found to be an efficient catalyst for the reaction. Good yields and enantioselec
Organocatalytic Enantio- and Diastereoselective Construction of syn-1,3-Diol Motifs via Dynamic Kinetic Resolution of in Situ Generated Chiral Cyanohydrins
Matsumoto, Akira,Asano, Keisuke,Matsubara, Seijiro
, p. 2688 - 2692 (2019)
An organocatalytic method for the asymmetric synthesis of syn-1,3-dioxanes as protected 1,3-diols via dynamic kinetic resolution of in situ generated chiral cyanohydrins has been developed. This method involves a reversible cyanohydrin formation/hemiaceta
Asymmetric cycloetherification of in situ generated cyanohydrins through the concomitant construction of three chiral carbon centers
Kurimoto, Yosuke,Nasu, Teruhisa,Fujii, Yuki,Asano, Keisuke,Matsubara, Seijiro
, p. 2156 - 2160 (2019/03/26)
The organocatalytic enantio- A nd diastereoselective cycloetherification of in situ generated cyanohydrins through the concomitant construction of three chiral carbon centers is reported. This protocol facilitates the concise synthesis of optically active
Kinetic Resolution of Acylsilane Cyanohydrins via Organocatalytic Cycloetherification
Matsumoto, Akira,Asano, Keisuke,Matsubara, Seijiro
supporting information, p. 116 - 120 (2018/12/05)
An asymmetric cyanation of acylsilanes involving the in-situ formation of chiral acylsilane cyanohydrins followed by their kinetic resolution via organocatalytic cycloetherification is described. The highly enantio- and diastereoselective cycloetherificat
Metal-free asymmetric 1,3-dipolar cycloaddition of N-arylmaleimides to azomethine ylides catalyzed by chiral tertiary amine thiourea
Bai, Jian-Fei,Wang, Liang-Liang,Peng, Lin,Guo, Yun-Long,Ming, Jun-Nan,Wang, Fei-Ying,Xu, Xiao-Ying,Wang, Li-Xin
experimental part, p. 4472 - 4478 (2011/10/01)
The first metal-free asymmetric 1,3-dipolar cycloaddition of N-arylmaleimides to azomethine ylides catalyzed by chiral tertiary amine thiourea to form multiply substituted pyrrolidines in excellent yields (up to 89%) and enantioselectivities (up to 96% ee) is presented. This procedure allows a rapid diversity-oriented synthesis of chiral pyrrolidine derivatives with high optical purity. A series of bifunctional thiourea catalysts were applied for the first time to the highly asymmetric 1,3-dipolar cycloaddition of N-arylmaleimides to azomethine ylides togive the products in excellent yields (up to 89%) and enantioselectivities (up to 96% ee).
