摘要：
水杨醛分别与2-氨甲基吡啶和4-氨甲基吡啶通过亲核反应,得到2种双席夫碱2-{1,2-二[(E)-2-羟基苯亚甲氨基)]-2-(吡啶基)乙基}苯酚,其还原产物与甲醛发生关环反应,得到2种结构新颖的多酚羟基咪唑啉化合物2-[1,3-二(2-羟基苯甲基)-5-(2-吡啶基)-4-咪唑烷基]苯酚(2a )和2-[1,3-二(2-羟基苯甲基)-5-(4-吡啶基)-4-咪唑烷基]苯酚(2b ),用1 H NMR、13 C NMR、IR等对2a、2b 的结构进行了表征.通过 X-射线单晶衍射确定了2a的晶体结构,2a 的晶体属于单斜晶系,P21/c 空间群,晶胞参数：a＝1．3460(4)nm,b＝1．4771(4)nm,c＝1．2027(5)nm,β＝100．490(1)°,V＝2．3511(14)nm3,Dc＝1．281 mg/cm－3,Z＝4,F (000)＝960．4390,μ＝0．08 mm－1.%Sailcylaldehyde reacts respectively with 2-aminomethylpyridine and 4-aminomethylpyridine to afford two bis-schiff bases,whose reduction products,2-[1 ,2-bis{[(E)-(2-hydroxyphenyl)methylidene] amino}-2-pyridinylethyl]phenol (1a,1b ), further react with formaldehyde to produce two novel imidazolines derivates,2-[1 ,3-bis(2-hydroxy benzyl)-5- (2-pyridyl)-4-imidazolidinyl]phenol(2a)and 2-[1 ,3-bis (2-hydroxy benzyl )-5-(4-pyridyl )-4-imidazolidinyl ] phenol (2b ).Their structures were characterized by 1 H NMR,13 C NMR,IR and X-ray single-crystal diffraction (2a).2a belongs to monoclinic system,space group P2(1) with a=1.346 0(4)nm,b=1.477 1(4)nm,c=1.202 7(5) nm,β=100.490 0(1)°,V=2.351 1(14)nm3,Dc=1.281 mg/cm-3,Z=4,F(000)=960.439 0,μ=0.08 mm-1 .
