1951 年 71 巻 6 号 p. 540-541
Following four kinds of phenylpyrazolone derivatives were synthesized: 1-phenyl-3-amino-5-pyrazolone, m.p. 219°; 1-phenyl-3, 5-diacetyl-3-amino-5-pyrazolone, m.p. 141-142°; 1-phenyl-3-acetamino-5-pyrazolone, m.p. 213-214°, and 1-phenyl-3-benzoylamino-5-pyrazolone, m.p. 215-216°.