from aryl aldehydes, ammonium chloride and triethylamine in methanol, and their conversions to the trans-isomers are reported. Crystal structures of cis-(1: aryl = pyridin-2-yl), cis-[1: aryl = thien-2-yl·0.5H2O], trans-(1: aryl = thien-2-yl), and trans-[(1: aryl = pyridin-2-yl)H]+[OAc]−·3H2O}, have been determined and compared with related structures.
摘要 由芳基醛、
氯化铵和
三乙胺在
甲醇中制备顺式-2,4,5-三芳基-4,5-二氢-
1H-咪唑(芳基=
噻吩-2-基或
吡啶-2-基),并报告了它们向反式异构体的转化。顺式-(1: 芳基 =
吡啶-2-基)、顺式-[1: 芳基 = thien-2-yl·0.5H2O]、反式-(1: 芳基 = thien-2-yl) 和反式的晶体结构-[(1: aryl = pyridin-2-yl)H]+[OAc]-·3H2O},已确定并与相关结构进行比较。