An article Ultrasound mediated green synthesis of pyrano[2,3-c]pyrazoles by using Mn doped ZrO2 WOS:000472548800007 published article about ONE-POT SYNTHESIS; MULTICOMPONENT SYNTHESIS; EFFICIENT SYNTHESIS; CATALYZED CASCADE; ORGANIC-SYNTHESIS; DERIVATIVES; PYRAZOLE; ACID; PYRANOPYRAZOLES; NANOPARTICLES in [Maddila, Suresh; Shabalala, Sebenzile; Oyetade, Oluwaseun; Maddila, Surya Narayana; Jonnalagadda, Sreekantha B.] Univ KwaZulu Natal, Sch Chem & Phys, Westville Campus,Chilten Hills,Private Bag 54001, ZA-4000 Durban, South Africa; [Gorle, Sridevi] Univ KwaZulu Natal, Discipline Biochem, Chiltern Hills, ZA-4000 Durban, South Africa; [Lavanya, Palakondu] JNT Univ, Annamacharya Inst Technol & Sci, Dept Chem, Tirupati 517502, Andhra Pradesh, India in 2019.0, Cited 54.0. Product Details of 93-02-7. The Name is 2,5-Dimethoxybenzaldehyde. Through research, I have a further understanding and discovery of 93-02-7
Mn doped zirconia is utilized as an environmental-friendly and efficient catalyst for an ultrasound mediated four-component coupling reaction, containing dimethylacetylenedicarboxy late/ethyl acetoacetate, hydrazine hydrate, malononitrile, and aromatic aldehyde. These reactions were performed under green solvent conditions, to yield pyrano[2,3-c]pyrazole-3-carboxylate/pyr ano[2,3-c]pyrazole-5-carbonitrile derivatives (5a-g and 7a-g) with good to excellent yields (88-98%). The structures of the compounds were identified and confirmed by H-1 NMR, N-15 NMR, C-13 NMR, FT-IR and HR-MS spectral data. The prepared catalyst Mn/ZrO2 was synthesized and fully characterized by various techniques including P-XRD, BET, SEM and TEM analysis. The main benefits of this process are short reaction times, easy work-up, reusability of the catalyst and no chromatographic purifications. (C) 2016 The Authors. Production and hosting by Elsevier B.V. on behalf of King Saud University.
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Reference:
Isothiazole – Wikipedia,
,Isothiazole – ScienceDirect.com