315670-91-8Relevant articles and documents
Design and development of a new functionalized cellulose-based magnetic nanocomposite: preparation, characterization, and catalytic application in the synthesis of diverse pyrano[2,3-c]pyrazole derivatives
Maleki, Ali,Eskandarpour, Vahid
, p. 1459 - 1472 (2019/06/10)
In this work, a facile protocol for the preparation of a new cellulose-based functionalized magnetic nanocomposite catalyst is described. The structure and morphology of the prepared nanomaterial was characterized by scanning electron microscopy, energy-d
MIL-53(Fe) Metal–Organic Frameworks (MOFs) as an Efficient and Reusable Catalyst for the One-Pot Four-Component Synthesis of Pyrano[2,3-c]-pyrazoles
Ghasemzadeh, Mohammad Ali,Mirhosseini-Eshkevari, Boshra,Abdollahi-Basir, Mohammad Hossein
, (2018/11/23)
A novel and simple approach for the efficient and rapid synthesis of pyrano[2,3-c]-pyrazoleshas been accomplished via the four-component condensation reaction of malononitrile, hydrazine hydrate, ethyl acetoacetate, and substituted aldehydes using MIL-53(
Synthesis of pyranopyrazoles using nano-Fe-[phenylsalicylaldiminemethylpyranopyrazole]Cl2 as a new Schiff base complex and catalyst
Moosavi-Zare, Ahmad Reza,Goudarziafshar, Hamid,Saki, Khadijeh
, (2017/09/06)
By the condensation reaction of benzaldehyde with ethyl acetoacetate, malononitrile and hydrazine hydrate in the presence of FeCl2, a pyranopyrazole derivative was prepared which was then reacted with salicylaldehyde to afford nano-Fe-[phenylsalicylaldiminemethylpyranopyrazole]Cl2 (nano-[Fe-PSMP]Cl2). The prepared nano-Schiff base complex was fully characterized using Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, differential thermogravimetry, scanning electron microscopy and UV–visible spectroscopy, and was used as an efficient and catalyst for the preparation of pyranopyrazoles.
Tris-hydroxymethylaminomethane (THAM): A novel organocatalyst for a environmentally benign synthesis of medicinally important tetrahydrobenzo[b]pyrans and pyran-annulated heterocycles
Pandit, Kapil S.,Chavan, Pramod V.,Desai, Uday V.,Kulkarni, Makarand A.,Wadgaonkar, Prakash P.
, p. 4452 - 4463 (2015/06/16)
A simple, efficient and environmentally benign protocol has been developed for the one-pot, multicomponent synthesis of medicinally important tetrahydrobenzo[b]pyrans and pyran-annulated heterocycles using a commercially available, inexpensive, non-toxic, and biodegradable tris-hydroxymethylaminomethane (THAM) as a novel organocatalyst. Ambient reaction conditions, wide scope, avoidance of conventional isolation as well as purification techniques and the reusability of the catalyst for five consecutive runs have improved the practical utility of this multicomponent reaction protocol manifold.
Fast synthesis of pyrano[2,3-c]pyrazoles: Strong effect of Br?nsted and Lewis acidic ionic liquids
Hajipour, Abdol R.,Karimzadeh, Morteza,Tavallaei, Hamed
, p. 987 - 991 (2015/05/05)
Abstract In a unique approach, four-component synthesis of some pyrano[2,3-c]pyrazoles by [ChCl][ZnCl2]2 and [H-NMP]HSO4 as inexpensive and recyclable acidic ionic liquids were investigated. Excellent yields of products we
Synthesis of substituted pyranopyrazoles under neat conditions via a multicomponent reaction
Nagarajan, Arasampattu S.,Reddy, Boreddy S. R.
experimental part, p. 2002 - 2004 (2010/04/05)
A simple and efficient synthesis of pyranopyrazoles in good yields via a four-component reaction between an aromatic aldehyde, hydrazine hydrate, ethyl acetoacetate and malononitrile under neat conditions is described. Georg Thieme Verlag Stuttgart.