Formation of 4-hydroxy-3-(α-hydroxybenzyl)-4-phenyl-2-pyrazolin-5-one from the interaction of 3,6-bis-(α-hydroxybenzyl)-s-tetrazine with potassium hydroxide in methanol
作者:Daniel Hunter、Douglas G. Neilson
DOI:10.1039/p19810001371
日期:——
4-Hydroxy-3-(α-hydroxybenzyl)-4-phenyl-2-pyrazolin-5-one has been obtained from the reaction of methanolic potassium hydroxide with 3,6-bis-(α-hydroxybenzyl)-s-tetrazine and its structure proved by an alternative synthetic route. The mechanism of the rearrangement has been shown to involve a hydride transfer to a further tetrazine molecule which undergoes reduction to the dihydro-derivative.
由甲醇氢氧化钾与3,6-双-(α-羟基苄基)-s-四嗪反应得到4-羟基-3-(α-羟基苄基)-4-苯基-2-吡唑啉-5-酮。它的结构由另一种合成途径证明。已经显示出重排的机理涉及氢化物转移至另一四嗪分子,该四嗪分子经历还原成二氢衍生物。