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以3,6-二溴-2,7-二羟基萘为起始原料,经与2-溴-N-苯基乙酰胺醚化,再用硼氢化钠和三氟化硼乙醚还原得基于萘基块新型的开链冠醚,两步总收率为96%.利用单晶X衍射研究其结构,晶体为三斜晶系,P-1空间群,a=9.588(3),b=10.898(3),c=13.060(4),α=103.190(4)°,β=93.953(4)°,γ=115.622(5)°,V=1176.0(6)3,Z=2,Dc=1.571 g/cm3,λ=0.71075 nm,μ(Mo Kα)=3.472 mm-1,Mr=353.22,F(000)=560.在晶体结构中,分子中的一个N—H基团与另外一分子形成双分叉氢键N—H…Br和N—H…O,进而组装成二聚体.这些中心对称的二聚体进一步通过C—H…π相互作用叠加成二维层状结构平行于(110)面.
Using 3,6-dibromo-2,7-dihydroxynaphthalene as a starting material, etherification with 2-bromo-N-phenylacetamide and reduction with sodium borohydride and boron trifluoride diethyl ether gave The new open-chain crown ethers with a total yield of 96% were obtained by single crystal X-ray diffraction. The structure of the crystal was triclinic with a = 9.588 (3) and b = 10.898 Α = 103.190 (4) °, β = 93.953 (4) °, γ = 115.622 (5) °, V = 1176.0 (6) 3, Z = 2, Dc = 1.571 (Mo Kα) = 3.472 mm-1, Mr = 353.22, F (000) = 560. In the crystal structure, one N-H group in the molecule forms with another molecule Bifurcated hydrogen bonds N-H ... Br and N-H ... O, which in turn assemble into dimers These centrosymmetric dimers are further superimposed by a C-H ... π interaction into a two-dimensional layered structure parallel to ( 110) surface.