Slow evaporation of a chloroform-n-hexane solution of 2-(anthracene-9-ylethynyl)-1-methylbenzimidazole (BzIm-An) yields cyclodimer (BzIm-An)(2) as crystals; the cyclodimerization is then dramatically accelerated on the product crystal faces.
缓慢蒸发2-(
蒽-9-乙
乙炔基)-
1-甲基苯并咪唑(BzIm-An)的
氯仿-
正己烷溶液,得到环二聚体(BzIm-An)(2),为晶体。然后,在产物晶体表面上大大加快了环二聚作用。