The first reported 1,3-dipolar cycloaddition of 2-styrylchromones with diazomethane afforded 4-aryl-3-(2-chromonyl)-2-pyrazolines. However, 3-aryl-4-(2-chromonyl)-1-pyrazolines have been also found as minor products of this reaction. These two series of pyrazolines have been fully characterized.
首次报道的2-
苯乙烯基
色酮与
重氮甲烷的1,3-偶极环加成反应得到4-芳基-3-(2-苯甲酰基)-2-
吡唑啉。然而,还发现3-芳基-4-(2-苯甲酰基)-1-
吡唑啉是该反应的次要产物。这两个系列的
吡唑啉已得到充分表征。