发明授权
US3979412A Process for producing 3-anilino-5-pyrazolones 失效
3-苯胺基-5-吡唑啉酮的制备方法

Process for producing 3-anilino-5-pyrazolones
摘要:
A process for producing a 3-anilino-5-pyrazolone which comprises reacting a .beta.-anilino-.beta.-alkoxy-acrylate with a hydrazine in the presence of a compound having a pKa of about 8 up to about 14.
信息查询
0/0