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以N-苄基靛红、氨基丙二酸二乙酯和丙烯酸甲酯为原料,在甲苯溶剂中,通过消旋磷酸的催化,在常温搅拌下即可一步合成得到化合物C_(26)H_(28)N_2O_7,实现了多官能团化的四氢吡咯螺吲哚衍生物骨架的构建.其结构通过单晶X射线衍射法确定,晶体属三斜晶系,空间群为P-1,相对分子质量Mr=480.50,晶胞参数a=0.895 73(3)nm,b=0.956 10(2)nm,c=1.503 61(3)nm,V=1.252 31(6)nm~3,Z=2,晶胞密度Dc=1.274g/cm~3,吸收系数μ=0.771mm~(-1),单胞中电子的数目F(000)=508.晶体结构用直接法解出,经全矩阵最小二乘法对原子参数进行修正,最终的偏离因子R=0.070 7,wR=0.139 9.在晶体结构中新形成的四氢吡咯环为信封式构象,与吲哚环近似于垂直.
The compound C_ (26) H_ (26) was synthesized by the reaction of racemic phosphoric acid in toluene with N-benzylisatin, diethyl aminomalonate and methyl acrylate as raw materials. 28) N 2 O 7, the multifunctional skeleton of tetrahydropyrrodospirilodole derivatives was constructed.The structure was confirmed by single crystal X-ray diffraction, the triclinic system was crystal, the space group was P-1, the relative molecular mass Mr = 480.50, cell parameters a = 0.895 73 (3) nm, b = 0.956 10 (2) nm, c = 1.503 61 (3) nm, V = 1.252 31 Cell density Dc = 1.274g / cm ~ 3, absorption coefficient μ = 0.771mm ~ (-1), the number of single cells in the electron F (000) = 508. The crystal structure was solved by direct method, the whole matrix least squares The atomic parameters were corrected, the final deviation factor R = 0.070 7, wR = 0.139 9. In the crystal structure of the newly formed tetrahydropyrrole ring for the envelope conformation, and the indole ring is approximately perpendicular.