57026-80-9Relevant academic research and scientific papers
An eco-friendly synthesis of 2-pyrazoline derivatives catalysed by CeCl 3· 7 H 2O
Bhat, Prabhat,Shridhar, Gomathi,Ladage, Savita,Ravishankar, Lakshmy
, p. 1441 - 1448 (2017/09/25)
Abstract: 1,3,5-triaryl-2-pyrazoline derivatives were synthesised by a condensation reaction between chalcones and phenyl hydrazine using cerium chloride heptahydrate as a catalyst. All these reactions were carried out in ethyl lactate (70%) as a green solvent. Easy and efficient work up, recyclability of solvent and catalyst are the key merits of this protocol. Graphical Abstract:: SYNOPSIS A facile protocol for the synthesis of 1,3,5-triaryl-2-pyrazolines is described. The solvent ethyl lactate, obtained from renewable sources, is biodegradable. The catalyst CeCl 3· 7 H 2O is a water-tolerant Lewis acid with low toxicity. Easy and clean work up, recyclable solvent and catalyst are merits of the protocol. The reaction works well for all systems giving good yields of the desired products.[Figure not available: see fulltext.].
2,3,5 TRISUBSTITUTED PYRROLE DERIVATIVES AS TOPOISOMERASE INHIBITORS AND THERAPEUTIC USES THEREOF
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Page/Page column 25; 29; 38, (2017/03/14)
The compounds of Formula (1) having topoisomerase inhibitory effect includes [Formula should be inserted here] wherein, R1 is selected from a group consisting of H, OR5, optionally substituted C1-C12 alkyl, haloalkyl, C2-C12alkenyl, C2-C12alkynyl, C1-C12alkyloxy, C1-C12haloalkyloxy, C2-C10 heteroalkyl, C3- C12 cycloalkyl, C3-C12cycloalkenyl, C2- C12heterocycloalkyl, C2-C2 heterocycloalkenyl, C6-C18aryl, and C1-C18heteroaryl; R2, R3 and R4 are independently selected from a group consisting of H, halogen, CN, - NO2, SH, CF3, OH, CO2H, CONH2, OCF3, optionally substituted C1-C12alkyl, optionally substituted C1-C12haloalkyl optionally substituted C2-C12alkenyl, optionally substituted C2- C12alkynyl, optionally substituted C1-C12alkyloxy, optionally substituted C1- C12haloalkyloxy, optionally substituted C2-C12heteroalkyl, optionally substituted C3- C12cycloalkyl, optionally substituted C3-C12 cycloalkenyl, optionally substituted C2-C12 heterocycloalkyl, optionally substituted C2-C12 heterocycloalkenyl, optionally substituted C6- C18aryl, and optionally substituted C1-C18heteroaryl; R5 is selected H, optionally substituted C1-C12alkyl, optionally substituted C2- C12alkenyl, optionally substituted optionally substituted C1-C12 haloalkyl, optionally substituted C3-C12cycloalkyl, optionally substituted C6- C18aryl, and optionally substituted C1- Ci18heteroaryl; or a pharmaceutically acceptable salt, N-oxide, or prodrug thereof.
Interactive free energy relationships for non-additive multiple substituent effects in base catalysed condensation of benzaldehydes with acetophenones: A kinetic study
Sondu, S.,Sethuram, B,Rao, T. Navaneeth
, p. 67 - 69 (2007/10/02)
The base-catalysed condensation of benzaldehydes with acetophenones is enhanced by electron-withdrawing substituents in both starting compounds.The magnitude of ρ-value obtained for various substituents in the benzaldehyde moiety decreases with the introduction of electron-withdrawing groups in the para position of acetophenone moiety.
