Abstract Optically active α-amino acid was asymmetrically synthesized under soluble polymer-supported quinine by homogeneous phase catalytic reaction. The precursor of l -phenylalanine, Ph 2 NCH(CH 2 Ph)CO 2 C 2 H 5 (C 24 H 23 NO 2 , M r =364.38) has been determined by X-ray diffraction analysis. The crystal belongs to monoclinic system with space group P 2 1 / c , a =10.4539(10), b =9.8315(10), c
摘要 在可溶性聚合物负载的
奎宁下,通过均相催化反应不对称合成了具有旋光活性的
α-氨基酸。
L-苯丙氨酸的前体Ph 2 NCH(CH 2 Ph)CO 2 C 2 H 5 (C 24 H 23 NO 2 ,M r =364.38)已通过X射线衍射分析确定。该晶体属于单斜晶系,空间群为 P 2 1 / c , a =10.4539(10), b =9.8315(10), c =19.8896(19) A, α =90.00, β =93.661(2), γ = 90.00°,V =2040.0(3) A 3 ,Z =4,D c =1.164 mg mm -3 ,μ =0.074 mm -1 ,F (000) = 760。最终的 R 和 wR 因子分别为 0.0463 和 0.1239,具有 3610 个(R int = 0.0291)独立反射。