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1,1-Bis(4-fluoro­phen­yl)-3,4-dihydro-1H-1,3-oxazino[3,4-a]indole

机译:1,1-双(4-氟­基)-3,4-二氢-1H-1,3-恶嗪基[3,4-a]吲哚

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摘要

The title compound, C23H17F2NO, which crystallizes with two independent mol­ecules in the asymmetric unit, was prepared by the cyclization of 4-[2-bis­(4-fluoro­phen­yl)methyl­eneamino]but-3-yn-1-ol at room temperature. The mol­ecules display a tripod conformation. The two fluoro­phenyl rings make dihedral angles of 79.26 (2) and 85.87 (1)° [86.53 (1) and 83.67 (2)° in the second mol­ecule] with the indole ring, and the dihedral angles between the fluoro­phenyl rings are 67.74 (2) and 66.33 (2)°, respectively. Furthermore, the indole rings are located on the edge of the respective oxazine half-chair ring systems. Nonconventional C—H⋯π contacts between indole and fluoro­phenyl rings are observed.
机译:通过在室温下环化4- [2-双­(4-氟­苯基)甲基­烯氨基] but-3-yn-1-ol制备标题化合物C23H17F2NO,该化合物以不对称单元的两个独立分子结晶。分子显示出三脚架构象。两个氟苯基环与吲哚环的二面角为79.26 and(2)和85.87(1)°[第二个分子中为86.53(1)和83.67(2)°],氟苯基环之间的二面角为67.74( 2)和66.33(2)°。此外,吲哚环位于各自的恶嗪半椅环系统的边缘上。观察到吲哚和氟代苯基环之间的非常规CH-π接触。

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