Organic letters

Regioselective synthesis of pyrazole triflones based on triflyl alkyne cycloadditions

H Kawai, Z Yuan, E Tokunaga, N Shibata

Index: Kawai, Hiroyuki; Yuan, Zhe; Tokunaga, Etsuko; Shibata, Norio Organic Letters, 2012 , vol. 14, # 20 p. 5330 - 5333,4

Full Text: HTML

Citation Number: 38

Abstract

The regioselective synthesis of pyrazole triflones has been achieved by 1, 3-dipolar cycloaddition of triflyl alkynes and hydrazonoyl chloride in the presence of Hünig's base. Pyrazolo [5, 1-a] isoquinoline triflones were also regioselectively synthesized for the first time via tandem 1, 3-dipolar cycloaddition/oxidative aromatization between triflyl alkynes and C, N-cyclic azomethine imines.

Related Articles:

Facile Regioselective Synthesis of Pyrazolo [5, 1-a] isoquinolines via Ring-Opening Cyclization/Oxidation Reactions of Stable Aroyldiaziridines of 3, 4- …

[Ortega, Heriberto; Ahmed, Sara; Alper, Howard Synthesis, 2007 , # 23 p. 3683 - 3691]

Facile Regioselective Synthesis of Pyrazolo [5, 1-a] isoquinolines via Ring-Opening Cyclization/Oxidation Reactions of Stable Aroyldiaziridines of 3, 4- …

[Ortega, Heriberto; Ahmed, Sara; Alper, Howard Synthesis, 2007 , # 23 p. 3683 - 3691]

Facile Regioselective Synthesis of Pyrazolo [5, 1-a] isoquinolines via Ring-Opening Cyclization/Oxidation Reactions of Stable Aroyldiaziridines of 3, 4- …

[Ortega, Heriberto; Ahmed, Sara; Alper, Howard Synthesis, 2007 , # 23 p. 3683 - 3691]

Facile Regioselective Synthesis of Pyrazolo [5, 1-a] isoquinolines via Ring-Opening Cyclization/Oxidation Reactions of Stable Aroyldiaziridines of 3, 4- …

[Ortega, Heriberto; Ahmed, Sara; Alper, Howard Synthesis, 2007 , # 23 p. 3683 - 3691]

More Articles...