Ethyl acetate

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  • Synthesis Of Trans-Cinnomine Synthesis

    Bromination of trans-cinnamic acid Purpose and Introduction The halogenation of of trans-cinnamic acid using pyridinium tribromide was connected in the organic solvent glacial acetic acid in order to verify and test which addition mechanism the reaction would follow. In the anti-addition mechanism, bromines attach themselves on opposite sides of the alkene functional group in a compound. In a syn-addition, the attach to the same side of the alkene. The reaction synthesis was completed by using a reflux system to produce to crude product, and a vacuum filter to yield a solid, crude product. Recrystallization of the solid product was performed, allowing the impurities of the solid to be removed while slowly crystallizing and the product. The melting point of the final recrystallized product was taken to compare and verify to that of the which stereoisomer of 2,3,-dibromo- 3-phenylpropanoic acid is produced, and therefore, determine which addition mechanism took place for the halogenation reaction. Theory The character of the halogenation anti mechanism begins with the electrophilic addition of bromine to trans-cinnamic acid. The bromine is an induced dipole electrophile, which is attacked by the alkene and forms the bridged-ion intermediate. The large size of the bromide atom results in the nucleophilic bromide anion performing a “backside attack” similar to that of SN2. The resulting product is a vicinal dibromide with a trans or anti relationship. As there are two…

    Words: 976 - Pages: 4
  • Ethyl Cinnamate Lab Report

    Abstract: The purpose of this experiment was to extract ethyl cinnamate, cinnamic acid, and glucose, which are ingredients in the candy, Red Hots. The experiment began with 0.604 grams of a mixture of ethyl cinnamate, cinnamic acid, and glucose. The purity of glucose and ethyl cinnamate was measured through IR Spectroscopy. Melting point was used to determine the purity for cinnamic acid. Using the final amount for each ingredient, we determined the percent yields, which were 64.7% for glucose,…

    Words: 1350 - Pages: 6
  • Analysis Of Rf Value Of Caffeine

    The mixture is also sonicated to further assist the increase in rate of reaction. The solid portion of the slurry is insoluble in ethyl acetate which is the excipients of the tablets therefore didn’t dissolve due to its polarity. The solid portion was filtered using filter paper into a seperating…

    Words: 765 - Pages: 4
  • Factionation Of ABE Extract By Column Chromatography Case Study

    bilimbi fruits (ABE) was fractionated by 100% petroleum ether (F1), followed by ethyl acetate: petroleum ether (F2, 20 : 80), ethyl acetate: petroleum ether (F3, 40 : 60), ethyl acetate: petroleum ether (F4, 60 : 40), ethyl acetate: petroleum ether (F5, 80 : 20), 100% ethyl acetate (F6), methanol: ethyl acetate (F7, 20 : 80) and methanol: ethyl acetate (F8, 40 : 60). Sl No Fractions Yield (g %) F1 100% petroleum ether 1.2% F2 ethyl acetate: petroleum ether (20 : 80)…

    Words: 845 - Pages: 4
  • Tlc And Column Chromatography

    Data and observation collected from column and TLC (silica stationary plate) on a mixture of ortho and para nitroaniline .The eluent used was a mixture of hexane and ethyl acetate, (13 ml) and (7 ml), respectively; the mobile phase used for the TLC was acetone. Fraction collected from elution of the dry column chromatography Mobile Phase used in Column Color and Number of Spots Observed Rf Value Test Tube 4-12 Mixture: hexane (13 ml) and ethyl acetate (7 ml) 9 clear-mustard yellow spots 0.27…

    Words: 1030 - Pages: 4
  • Pyrenehexanoic Acid Synthesis Lab Report

    Following TLC, the sample was evaporated with the Rotavap® and then extracted using 4:1 1-butanol and ethyl acetate as the organic layer and water. The sample failed to dissolve, so the organic layer was decanted off, and dichloromethane was used instead. The bottom-layer (dichloromethane and sample) was run through the Rotavap® and the sample residue that was left was reacted with 1-pyrenehexanoic acid. The second step of forming the amide also required TLC, and was done using the same…

    Words: 1556 - Pages: 7
  • Enasidenib Chemistry

    The molecular mass of Enasidenib is 473.383 and monoisotopic mass 473.1398. It is practically insoluble in aqueous solution in physiological pH range 1.2 to 7.4, very little soluble in Water <1 mg/mL, soluble in DMSO 50 mg/mL and Ethanol 50 mg/mL, usually used in active form Enasidenib mesylate. IdhifaTm is available in two tablet oral dosage forms which are film-coated and contain 50mg (equivalent to 60 mg Enasidenib mesylate) and 100 mg (equivalent to 120 mg Enasidenib mesylate) with inert…

    Words: 903 - Pages: 4
  • Synthesis Of 4-Nitrobromobenzene Lab Report

    the crude product in a small amount of hot solvent and then cooling it down in order for the crystals to form. The crystals are dried and column chromatography can be performed. Column chromatography is performed in order to separate compounds in a mixture. Figure 2 shows how the column this experiment required was set up. Glass wool is used to prevent the silica gel from being washed out of the nozzle. Sand is added in order to level out the glass wool so the silica gel will have a level…

    Words: 1570 - Pages: 7
  • Potato Dextrose Agar Essay

    4.4.1 Wagner’s Test (Kodangala et al., 2010) It is a specific test to detect the presence of alkaloids. Wagner’s reagent was prepared by dissolving 1.27g of iodine and 2g of potassium iodide in 100ml distilled water. To the 100μl of ethyl acetate fraction of each endophytic fungi, 4-5 drops of wagner’s reagent was added and observed for the presence of reddish-brown precipitate formation. Vinblastine and methanol was used as positive and negative control respectively 4.4.2 Hager’s Test…

    Words: 2097 - Pages: 9
  • Synthesis Of 4-Methoxyphenyl Cycloalkanol

    p-methoxyphenylacetonitrile and cyclohexanone using aq. NaOH and tetrabutylammonium hydrogen sulfate as PTC. NaBH4 and CoCl2 in 2:1 THF: H2O used for the reduction of VF-I to obtain 1-(2-amino-1-(4-methoxyphenyl)ethyl)cyclohexanol (VF-II). Further, venlafaxine derivative of the amino acid -carboxamide (VFCA-I toVII ) synthesized through coupling of N-Phthaloyl amino acid chloride derivative (2a-2g- synthesis reported in chapter-1) with 1-(2-amino-1-(4-methoxyphenyl) ethyl)cyclohexanol…

    Words: 1444 - Pages: 6
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