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3 protocols using 2 4 dinitro aniline

1

Soybean Oil and Waste Snail Shell Characterization

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Soybean oil was purchased from the local market in Silchar, Assam, India and its physical properties and compositions are listed in Table 1 of the ESI. Waste snail shells (Pila spp.) were procured from Mizoram, India. Methanol of analytical reagent (AR) grade was acquired from Merck, India. Double distilled water was used throughout the experiments. Bromothymol blue (pKa = 7.2), phenolphthalein (pKa = 9.8), indigo carmine (pKa = 12.2), 2,4-dinitroaniline (pKa = 15.0) and 4-nitroaniline (pKa = 18.4) were purchased from Sigma Aldrich.
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2

Synthesis of Substituted Anilines

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4-Nitroaniline (Sigma Aldrich), 3-Nitroaniline(Alfa Aesar), 3-(trifluoromethyl) aniline, 4-Nitro-2-(trifluoromethyl) aniline(Alfa Aesar), 3,5-dinitro aniline (Sigma Aldrich), 2,4-dinitro aniline (Sigma Aldrich), Sodium Azide (Sigma Aldrich), Copper Sulphate and Sodium ascorbate were used as received. Dichloromethane (Merck) was distilled. Triethyl amine was also distilled. Acryloyl chloride(Alfa Aesar) were used under inert conditions. AIBN (Sigma Aldrich) as obtained. All the solvents were purified by distillation prior to their use.
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3

Synthesis and Characterization of Substituted Anilines

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The analytical grades of ethyl 4-aminobenzoate, sodium nitrite (NaNO2), phenol, 1-bromohexane, 1,3-dicyclohexylcarbodiimide (DCC), 4-(N,N-dimethyl amino)pyridine (DMAP), 4-fluoro aniline, 2-fluoro aniline, 2-nitro aniline, 2-trifluoromethyl aniline, 2,4-dinitro aniline, potassium carbonate (K2CO3), sodium hydroxide (NaOH), potassium hydroxide (KOH), potassium iodide (KI) were procured from Sigma Aldrich and Spectrochem. For column chromatography silica gel 60-120 and neutral alumina were procured from Thomas baker. Acetone, hexane, ethyl acetate and dichloromethane were dried over phosphorus pentaoxide and calcium hydride, respectively. These solvents were distilled using standard methods when required for the experiment. Thin-layer chromatography (TLC) were performed on aluminium sheet precoated with silica gel-60 F254 (Merck). Infrared (IR) spectra were recorded using a PerkinElmer 1000 spectrometer. Proton nuclear magnetic resonance (1H NMR) spectra were recorded on a 400 MHz Bruker NMR spectrometer, using CDCl3 as a solvent and tetramethyl silane (TMS) as an internal standard.
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