38401-74-0Relevant academic research and scientific papers
From agriculture residue to catalyst support; A green and sustainable cellulose-based dip catalyst for C–C coupling and direct arylation
Kandathil, Vishal,Kempasiddaiah, Manjunatha,B. S., Sasidhar,Patil, Siddappa A.
, (2019/07/31)
The core characteristics of a perfect catalyst include good activity, simple design, excellent stability, easy recovery from reaction mixture, recyclability, and have the provision for easy scale up. The ease in synthesis, recyclability and scale up makes the dip catalyst a major contender in this regard which possess most of the aforementioned characteristics. In this work, we report a dip catalyst made of cellulose, isolated from agriculture residue (sugarcane bagasse), in which biogenically synthesized palladium nanoparticles were dispersed. The prepared dip catalyst was characterized by FESEM, EDS, XRD, ATR-IR, TGA, TEM, XPS and ICP-OES analysis. Also, the activity of the dip catalyst was studied in the Suzuki-Miyaura cross-coupling reaction and was found to give excellent conversion with 15 recycles. Further, the activity of dip catalyst in C5-arylation of 2-substituted thiophenes was evaluated for which promising yields were obtained.
A metal-free cascade reaction of β-halo-α,β-unsaturated aldehydes and 1,4-dithiane-2,5-diols: Synthesis of polycyclic 2-formylthiophenes
Goswami, Limi,Neog, Kashmiri,Sharma, Kumud,Gogoi, Pranjal
supporting information, p. 6470 - 6473 (2017/08/16)
A metal-free cascade reaction strategy has been developed for the synthesis of novel polycyclic 2-formylthiophenes from β-halo-α,β-unsaturated aldehydes and 1,4-dithiane-2,5-diols. A recyclable polymer supported organic base was used to perform the reaction process. This synthetic protocol was applied to synthesize several novel polycyclic thiophenes including steroidal D-ring annelated thiophene. Our synthetic strategy provides a high yield of thiophenes, avoids a tedious work-up procedure and minimizes the formation of waste.
Synthesis of 12-hetaryl-9,9-dimethyl-7,8,9,10-tetrahydrobenzo[a]acridin- 11(12H)-ones
Kozlov,Zhikharko,Lytvyn,Gorak,Skakovskii,Baranovskii,Basalaeva,Obushak
, p. 833 - 839 (2014/08/18)
Three-component condensation of naphthalen-2-amine with 5-arylfuran(thiophene, N-methylpyrrole)-2-carbaldehyde and 5,5- dimethylcyclohexane-1,3-dione, as well as condensation of N-[(5- arylfuran(thiophen)-2-ylmethylidene]naphthalen-2-amine with 5,5- dimethylcyclohexane-1,3-dione gave the corresponding 12-[5-arylfuran(thiophen, N-methylpyrrol)-2-yl]-7,8,9,10-tetradrobenzo[a]acridin-11(12H)-ones.
Synthesis and antioxidant activity study of pyrazoline carrying an arylfuran/arylthiophene moiety
Jois, Vidyashree H. S.,Kalluraya, Balakrishna,Girisha, Kotathattu S.
, p. 1469 - 1475 (2015/03/03)
A novel series of N-acetyl-3-aryl-5-(5-(p/o-nitrophenyl)-2-furyl/ /thienyl)-substituted pyrazolines (3a-o) were synthesized by the reaction of 1-aryl-3-(5-(p/o-nitrophenyl)-2-furyl/thienyl)-2-propene-1-ones with hydrazine hydrate in acetic acid medium. The structures of the newly synthesized compounds were established by IR, 1 H-NMR, mass spectra and a single-crystal X-ray study. The antioxidant activities of the synthesized compounds were determined using the DPPH scavenging assay. The compounds 3a, 3f, 3h and 3o showed moderate activity.
Synthesis and reactions of 5-aryl-2-thiophenecarbaldehydes
Obushak,Matiychuk,Lytvyn
experimental part, p. 936 - 940 (2009/05/07)
The reaction of 2-thiophenecarbaldehyde with arene diazonium chlorides in the presence of CuCl2 catalyst gave 5-aryl-2-thiophenecarbaldehydes. Use of 4-nitrobenzene diazonium chloride in the reaction also gave the isomeric 3-(4-nitrophenyl)-2-t
