Novel ionic liquid <i>N,N</i>-diethyl-<i>N</i>-sulfoethanaminium hydrogen sulfate: Design, characterization, and application as a highly efficient catalyst for the production of triazolo[1,2-<i>a</i>]indazole-triones and 2<i>H</i>-indazolo[2,1-<i>b</i>]phthalazine-triones
作者:Abdolkarim Zare、Fatemeh Masihpour
DOI:10.1080/10426507.2016.1149853
日期:2016.8.2
mass data. Then, its catalytic activity was examined for the preparation of triazolo[1,2-a]-indazole-triones and 2H-indazolo[2,1-b]phthalazine-triones by the one-pot multi-component condensation of arylaldehydes with dimedone and 4-phenylurazole/2,3-dihydrophthalazine-1,4-dione under solvent-free conditions. [Et3N-SO3H]HSO4 efficiently promoted the reaction to afford the products in high yields and
Guanidinium-based sulfonic acid as a new Brønsted acid organocatalyst has been synthesized, characterized, and applied for the synthesis of 3,4-dihydroquinoxalin-2-amine, 1,6-dihydropyrazine-2,3-dicarbonitrile, triazolo[1,2-a]indazole-trione, and spiro triazolo[1,2-a]indazole-tetraone derivatives in an aqueous medium. The catalytic system, reported here, possesses the advantages of both homogeneous and heterogeneous catalysts and can be repetitively used in water.
Quinuclidine Stabilized on FeNi<sub>3</sub>Nanoparticles as Catalysts for Efficient, Green, and One-Pot Synthesis of Triazolo[1,2-<i>a</i>]indazole-triones
作者:Seyed Mohsen Sadeghzadeh
DOI:10.1002/cplu.201300341
日期:2014.2
A new magnetically separable catalyst consisting of quinuclidin-3-thiol supported on propylsilane-functionalized silica-coated FeNi3 nanoparticles (FeNi3 /quinuclidine) has been prepared. The synthesized catalyst was characterized by powder X-ray diffraction, transmission electron microscopy, vibrating sample magnetometry, thermogravimetric analysis, and Fourier transform infrared spectroscopy. The
A multicomponent reaction on a ‘free’ KCC-1 catalyst at room temperature under solvent free conditions by visible light
作者:Seyed Mohsen Sadeghzadeh
DOI:10.1039/c6ra11480f
日期:——
A green and efficient method for the synthesis of various triazolo[1,2-a]indazole-triones under mild conditions is reported. The reported synthesis includes several advantages like being solvent free, operational simplicity, short reaction times, environmentally benign reaction conditions, cost effectiveness, high atom economy, and excellent yields, making it a genuinely green protocol.
报道了一种在温和条件下合成各种三唑并[1,2 - a ]吲唑-三酮的绿色有效方法。报道的合成方法包括无溶剂,操作简便,反应时间短,对环境无害的反应条件,成本效益,高原子经济性和优异的收率等诸多优点,使其成为真正的绿色方案。
Glycerol: a more benign and biodegradable promoting medium for catalyst-free one-pot multi-component synthesis of triazolo[1,2-a]indazole-triones
The one-pot three component synthesis of triazolo[1,2-a]indazole-triones was conducted successfully under catalyst-free conditions in glycerol as a benign, nontoxic and biodegradable promoting medium.