Degrees that expire

Synthesis, Spectral Studies, Pharmacological and Insect Antifeedant Activities of some (<i>E</i>)-1-(2-(2-Benzyloxy-3-Methacrylate))-1-Naphthyl Enones

“…And the corresponding stretches of keto-and ester-moiety of the synthesized (E)-1-(2-(2-benzyloxy-(3-methoxyacrylate))-1-naphthyl enones were presented in Table 2. These stretches were correlated with Hammett substituent constants, F and R parameters using single and multi-linear regression analysis [2,6,14,19,[24][25][26][27][28][29][30][31][32]. In the infrared spectral correlation, the Hammett equation is employed as in the form of ν = ρσ + ν o (1) where ν is the frequency for the members of the series; ρ is the reaction constant; σ is the substituent constant and ν o is the frequency for the parent member of the series.…”

“…These chemical shifts were correlated with Hammett substituent constants, F and R parameters using single and multi-regression analysis [2,6,14,19,[24][25][26][27][28][29][30][31][32]. The results of statistical analyses are presented in Table 5.…”

“…Currently, chemists and organic synthetic researcher have paid much more attention for green solvent assited and ground chemistry synthesis [1][2][3][4][5][6]. These synthetic methodology have merits over than conventional methods such as easy work-up procedure, handling technique, nonhazardousness, environmental pollution free from atmosphere, shorter reaction time and better yields [7].…”

Synthesis and Spectral Correlation Study of some 3-(3,4-dichlorophenyl)-5-(Substituted Phenyl)-4,5-dihydro-¹<i>H</i>-Pyrazole-1-yl-Ethanones

“…In the present investigation, the spectral linearity of 1-(3-(3,4-dichlorophenyl)-5-(substituted phenyl)-4,5-dihydro-1 H-pyrazole-1-yl) ethanones has been studied by assessment of the substituent effects [16][17][18][19][21][22][23][24][25][26] on the absorption group frequencies. The infrared carbonyl stretches νCO, CN (cm -1 ) and NMR chemical shifts δ(ppm) of H a , H b , H c , CH 3 protons, C=N, C=O and CH 3 carbons were assigned and these frequencies were correlated with Hammett substituent constants, F and R parameters.…”

Preheated Fly-Ash Catalyzed Aldol Condensation: Efficient Synthesis of Chalcones and Antimicrobial Activities of Some 3-Thienyl Chalcones

“…The reactions involving the formation of carbon-carbon bond and carbon-heteroatom bond are important and interesting in green synthesis. Based on this the Aldol 3 , Crossed-aldol 4 , Knoevenagel 5 , Mannich 6 , Michael 7 and Wittig 8 reactions have been applied for synthesising isomeric biologically active compounds such as chalcones and alkenes. Thermal condensation reactions have been found to be sluggish and time-consuming with poor yields.…”