Site-selectivity in hydrazinolysis of 3,4'-bis-(functionalized carbonyl)-4,3'-bis(pyrazolyl)ketones. A convenient synthesis of 4-(pyrazol-3-yl)-2H-pyrazolo[3,4-d]-pyridazines
摘要:
Reaction of hydrazine hydrate with 3,4-bis-(functionalized carbonyl)-4,3-bis(pyrazolyl)ketones proceeds regioselectively affording the corresponding 4-(pyrazol-3-yl)-2H-pyrazolo[3,4-d]pyridazine derivatives in high yields. The structures of the products were determined by spectroscopic and elemental analyses and supported by comparison with the possible isomers prepared by an independent route.
Site-selectivity in hydrazinolysis of 3,4'-bis-(functionalized carbonyl)-4,3'-bis(pyrazolyl)ketones. A convenient synthesis of 4-(pyrazol-3-yl)-2H-pyrazolo[3,4-d]-pyridazines
摘要:
Reaction of hydrazine hydrate with 3,4-bis-(functionalized carbonyl)-4,3-bis(pyrazolyl)ketones proceeds regioselectively affording the corresponding 4-(pyrazol-3-yl)-2H-pyrazolo[3,4-d]pyridazine derivatives in high yields. The structures of the products were determined by spectroscopic and elemental analyses and supported by comparison with the possible isomers prepared by an independent route.
Synthesis and antitumor activity of novel pyrazolylenaminone and bis(pyrazolyl)ketones<i>via</i>hydrazonoyl halides
作者:Ahmad S. Shawali、Sherif M. Sherif、Mahmoud M. El-Merzabani、Manal A. A. Darwish
DOI:10.1002/jhet.113
日期:2009.5
give the novel enaminone . The reaction of the latter with various hydrazonoyl halides afforded regioselectively the respective substituted (3-pyrazolyl)(4-pyrazolyl)ketones in good over all yield. The preliminary screening for the antitumoractivity of the synthesized compounds and against human breast cancer cell line (MCF-7) revealed that both compounds and have high-antitumor activity. SAR is discussed
Site-selectivity in hydrazinolysis of 3,4'-bis-(functionalized carbonyl)-4,3'-bis(pyrazolyl)ketones. A convenient synthesis of 4-(pyrazol-3-yl)-2H-pyrazolo[3,4-d]-pyridazines
作者:Ahmad Sami Shawali、Adel J. M. Haboub
DOI:10.3998/ark.5550190.0013.525
日期:——
Reaction of hydrazine hydrate with 3,4-bis-(functionalized carbonyl)-4,3-bis(pyrazolyl)ketones proceeds regioselectively affording the corresponding 4-(pyrazol-3-yl)-2H-pyrazolo[3,4-d]pyridazine derivatives in high yields. The structures of the products were determined by spectroscopic and elemental analyses and supported by comparison with the possible isomers prepared by an independent route.