作者:Qiu-Ya Wang、Zun-Ting Zhang
DOI:10.1007/s10870-020-00835-4
日期:2021.6
In this paper, two 2H-dibenzo[e, g]indazoles, 6-methoxy-9-isopropoxy-2H-dibenzo[e, g]indazole(1) and 6-fluoro-9-methoxy-2H-dibenzo[e, g]indazole(2) have been one-pot synthesized from the corresponding isoflavones by two dehydration processes. They have been characterized by IR, NMR, HRMS and single crystal X-ray diffraction. Single crystal X-ray diffraction analyses show that 1 crystallizes in the orthorhombic space group P 212121, and 2 in the monoclinic space group P 21. For both structures, intermolecular hydrogen bonding, π…π and C−H…π interactions play an important role in the packing of the molecules. Two 2H-dibenzo[e, g]indazoles, 6-methoxy-9-isopropoxy-2H-dibenzo[e, g]indazole and 6-fluoro- 9-methoxy-2H-dibenzo[e, g]indazole have been one-pot synthesized from the corresponding isoflavones by two dehydration processes. Single crystal X-ray diffraction analyses show that hydrogen bonding, π…π and C–H…π interactions are present in both structures.
在这篇论文中,通过两次脱水过程,从相应的异黄酮中一锅法合成了两种2H-二苯并[e, g]吲唑,即6-甲氧基-9-异丙氧基-2H-二苯并[e, g]吲唑(1)和6-氟-9-甲氧基-2H-二苯并[e, g]吲唑(2)。通过红外光谱、核磁共振、高分辨质谱和单晶X射线衍射对其进行了表征。单晶X射线衍射分析表明,1在正交晶系P 212121中结晶,2在单斜晶系P 21中结晶。对于这两种结构,分子间氢键、π…π和C−H…π相互作用在分子堆积中起着重要作用。通过两次脱水过程,从相应的异黄酮中一锅法合成了两种2H-二苯并[e, g]吲唑,即6-甲氧基-9-异丙氧基-2H-二苯并[e, g]吲唑和6-氟-9-甲氧基-2H-二苯并[e, g]吲唑。单晶X射线衍射分析表明,氢键、π…π和C–H…π相互作用在这