作者:Xiao-Liu Li、Yong-Mei Wang、Bing Tian、Teruo Matsuura、Ji-Ben Meng
DOI:10.1002/jhet.5570350124
日期:1998.1
A novel solid-state Michael addition between pyrazolone 1 and 4-arylidenepyrazolones 2 at ambient temperature produced Michael adducts, 4,4′-arylidenebis(3-methyl-1-phenyl-5-pyrazolones) 3. Pyrazolones 3 formed salts 4 with Cu2+ in solution, indicating the enolic structure of the pyrazolone rings. The reactivity of 2 with 1 is discussed in terms of the electronic and steric effects of the substituent
吡唑啉酮之间的新型固态迈克尔加成1和4- arylidenepyrazolones 2在环境温度下产生的迈克尔加成物,4,4'- arylidenebis(3-甲基-1-苯基-5-吡唑酮)3.吡唑酮类3形成的盐4与铜溶液中的2+表示吡唑啉酮环的烯醇结构。关于取代基对化合物2的亚芳基的电子和空间效应,讨论了2与1的反应性。吡唑啉酮1还与马来酰亚胺在100°下进行了固态迈克尔加成反应,得到加合物7,8和9。