双缩合螺吡喃的制备与晶体结构

Preparation and Crystal Structure of a Dicondensed Spiropyran

通过过量Fischer碱与3,5-二氯水杨醛反应,得到了一种新型的双缩合螺吡喃(1),即4-(2-亚甲基-1-乙基-3,3-二甲基吲哚啉-2′-基)-6,8-二氯-1′-乙基-3′,3′-二甲基-螺[3,4-二氢-2 H-l-苯并吡喃-2,2′-吲哚啉],并通过熔点、元素分析、IR和X-单晶衍射仪进行表征,确定了该化合物的结构。结果表明:a属单斜晶系,空间群P21/n,晶胞参数a=1.2889(3),b=1.2395(3),c=1.9362(4)nm,β=106.86(3)°,V=2.9603(13)nm3,Z=4,F(000)=1160,Dc=1.228g/cm3,μ=0.247mm-1。

A new dicondensed compound, 4- （2-methylene-l-ethyl-3,3-dimethylindoline-2 r-yl）-6,8-dichloro- 1Cethyl-3＇, 3＇-dimethylspiro[3,4-dihydro-2H-l-benzopyran-2,2＇-indoline], was prepared by the reaction of excess Fischer base with 3,5-dichlorosalicylaldehyde in ethanol. The structure of the compound was determined by melting point test, elemental analysis, IR spectroscopy and X-ray diffraction analysis. The re- sults showed that the compound belongs to monoclinic system, space group P2,/n with a=1.2889（3）,b=1.2395（3）,c=1.9362（4）nm,β=106.86（3）°,V=2.9603（13）nm^3,Z=4,F（000）=1160,Dc=1.228g/cm^3,μ=0.247mm^-1.