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首页> 外文期刊>Acta Crystallographica Section E: Crystallographic Communications >Crystal structures of methyl 3-(4-iso­propyl­phen­yl)-1-methyl-1,2,3,3a,4,9b-hexa­hydro­thio­chromeno[4,3-b]pyrrole-3a-carboxyl­ate, methyl 1-methyl-3-(o-tol­yl)-1,2,3,3a,4,9b-hexa­hydro­thio­chromeno[4,3-b]pyrrole-3a-carboxyl­ate and methyl 1-methyl-3-(o-tol­yl)-3,3a,4,9b-tetra­hydro-1H-thio­chromeno[4,3-c]isoxazole-3a-carboxyl­ate
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Crystal structures of methyl 3-(4-iso­propyl­phen­yl)-1-methyl-1,2,3,3a,4,9b-hexa­hydro­thio­chromeno[4,3-b]pyrrole-3a-carboxyl­ate, methyl 1-methyl-3-(o-tol­yl)-1,2,3,3a,4,9b-hexa­hydro­thio­chromeno[4,3-b]pyrrole-3a-carboxyl­ate and methyl 1-methyl-3-(o-tol­yl)-3,3a,4,9b-tetra­hydro-1H-thio­chromeno[4,3-c]isoxazole-3a-carboxyl­ate

机译:3-(4-异丙基苯基)-1-甲基-1,2,3,3a,4,9b-六氢硫代色素[4,3-b]吡咯-3a-羧酸盐,1-甲基-3-(甲基)的晶体结构邻甲苯基)-1,2,3,3a,4,9b-六氢硫代色素[4,3-b]吡咯-3a-羧酸盐和甲基1-甲基-3-(邻甲苯基)-3,3a,4, 9b-四氢-1H-硫代色素[4,3-c]异唑-3a-羧酸盐

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摘要

In the title compounds, C23H27NO2S, (I), and C21H23NO2S, (II), the pyrrole rings have envelope conformations with the C atom substituted by the benzene ring as the flap. In the third title compound, C20H21NO3S, (III), the isoxazole ring has a twisted conformation on the C—C bond substituted by the benzene ring and the carboxyl­ate group. In all three compounds, the thio­pyran ring has a half-chair conformation. The mean plane of the pyrrole ring is inclined to the mean plane of the thio­pyran ring by 57.07 (9), 58.98 (9) and 60.34 (12)° in (I), (II) and (III), respectively. The benzene rings are inclined to one another by 73.26 (10)° in (I), 65.781)° in (II) and 63.37 (13)° in (III). In the crystals of all three compounds, there are no classical hydrogen bonds present. Only in the crystal of compound (I) are mol­ecules linked by a pair of C—H⋯π inter­actions, forming inversion dimers. The isopropyl group in compound (I) is disordered over two sets of sites and has a refined occupancy ratio of 0.586 (13):0.414 (13).
机译:在标题化合物C23H27NO2S(I)和C21H23NO2S(II)中,吡咯环具有包膜构象,其中C原子被苯环取代,成为侧翼。在第三标题化合物C20H21NO3S(III)中,异恶唑环在被苯环和羧酸酯基取代的CC键上具有扭曲的构象。在所有三个化合物中,噻喃环具有半椅构象。在(I),(II)和(III)中,吡咯环的平均平面相对于噻喃环的平均平面倾斜57.07(9),58.98(9)和60.34(12)°。苯环在(I)中相互倾斜73.26(10)°,在(II)中倾斜65.781)°,在(III)中倾斜63.37。(13)°。在所有三种化合物的晶体中,不存在经典的氢键。只有在化合物(I)的晶体中,分子才通过一对CH⋯π相互作用连接,形成反向二聚体。化合物(I)中的异丙基在两组位点上是无序的,精制的占有率为0.586(13):0.414(13)。

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