Synthesis Essay

    Page 1 of 50 - About 500 Essays
  • Solid-Phase Synthesis Methodology Of N-Substituted-2-Aminothiazo (SPOS)

    A novel solid-phase synthesis methodology of N-substituted-2-aminothiazolo[4,5-b]pyrazine derivatives was developed. The key step in this synthesis strategy is tandem reaction of isothiocyanate terminated resin 2 with o-halo-2-aminopyrazine, affording cyclized 2-aminothiazolo[4,5-b]pyrazine resin 4. To increase the diversity of our library, Suzuki coupling reaction was performed at the position C6. Further functionalization of 2-aminothiazolo[4,5-b]pyrazine core skeleton with various electrophiles such as alkyl halides, acyl chlorides, and sulfonyl chlorides and cleavage from the resin with TFA in DCM generated N-alkyl-, N-acyl-, and N-sulfonyl-2-aminothiazolo[4,5-b]pyrazine derivatives. This synthetic strategy can efficiently provide a library…

    Words: 877 - Pages: 4
  • 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…

    Words: 976 - Pages: 4
  • Synthesis Reflection

    important time to reflect on the quarter and the year as a whole. In the past two months, I have been able to learn how to write a whole new type of essay, the synthesis essay, and improve my reading comprehension skills through reading A Farewell to Arms and multiple choice practice sets. With these new skills and the knowledge I have gathered from the first semester of the class, I feel like I am well on my way to take the AP Language & Composition exam in May. Overall, the third quarter has…

    Words: 1650 - Pages: 7
  • Phenacetin Synthesis

    Phenacetin (C10H13NO2) can be synthesized from various organic compounds. The two primary compounds used for synthesis in this lab were Acetaminophen (C8H9NO2) and p-Phenetidine (C8H11NO). Both of these compounds have similar organic structures, however, Acetaminophen resulted in a more pure form of Phenacetin. Additionally, both of these compounds had to undergo specific chemical reactions, in order to form the same molecular structure as Phenacetin. Finally, these compounds had to be…

    Words: 733 - Pages: 3
  • Deoxyadenosine Case Study

    Deprotection by the treatment with aqueous ammonia is incompatible with the synthesis of base-labile oligonucleotides. Based on a report of the formation of formyl group from N,N-dimethylformamidine, Ohkubo et al. (2010) prepared oligonucleotides containing amidine-type protecting groups, N,N-dimethylformamidine (dmf) and N,N-dibutylformamidine (dbf), and the resulting oligonucleotides were rapidly deprotected under mild acidic conditions using imidazolium triflate or HOBt or simply by heating…

    Words: 1764 - Pages: 8
  • Synthesis Of Ethyl Cinnamate Synthesis Essay

    Experiment 5 Synthesis and NMR Spectroscopy of ethyl cinnamate Introduction: Wittig reactions involve the stereoselective synthesis of olefins from phosphonium ylides and aldehydes or ketones, where the carbonyl bond is converted to an alkene double bond.1 The variety of suitable reagents and the relatively mild experimental conditions facilitate their industrial applications, such as the synthesis of epoxides, esters, carotenoids and vitamin A.2,3 Specifically, the ester ethyl cinnamate is used…

    Words: 921 - Pages: 4
  • Synthesis Of Acetaminophen Synthesis Report

    Introductions: The purpose of this experiment is to synthesize acetaminophen and esters in order to apply the process of retrosynthetic analysis to determine the unknown alcohols used to produce the esters. Acetaminophen, a popular active ingredient in many over-the-counter drugs, is used as a pain reliever and a fever reducer. It is synthesized from the reaction between a carboxylic acid and an amine; thus, acetaminophen contains hydroxyl and amide functional groups.1 C6H7NO + C4H6O3 C8H9NO2 +…

    Words: 839 - Pages: 4
  • Si3n4 Synthesis

    A novel synthesis method to prepare Si3N4 nanowires from the amorphous silicon nitride (a-Si3N4) powder synthesized by low-temperature vapor-phase reaction method was investigated. Highly crystallized α-Si3N4 nanowires were synthesized from the heat-treatment of a-Si3N4 powder under ammonia atmosphere. The surface of the nanowires was smooth and clean without any attached particles. The thickness of the nanowires was in the range ~200–300 nm with the lengths of tens of micrometers. The…

    Words: 806 - Pages: 4
  • Tetrahydrocarbazole Synthesis

    Scheme-1-Synthesis of substituted tetrahydrocarbazole Dissolve 8.8gm (0.08mol) of cyclohexanone in 50 ml of glacial acetic acid add 8.8 gm (0.08mol) of substituted phenyl hydrazine and boil the solution under reflux for 15 min, cooled the solution, where the product was crystallised out. Filtered it with vacuum pump, then drained well and recrystallised using Ethanol. Scheme-2: Synthesis of N-substituted Tetrahydrocarbazoles Suspended 1 gm (0.07 mol) of substituted tetrahydrocarbazole in 20 mL…

    Words: 895 - Pages: 4
  • Synthesis Of Phthalocyanine

    devices. In addition, their novelty is rapidly growing in other fields where they are used as sensing elements in chemical sensors, electrocatalysts, liquid crystals, electrochromic display devices, information storage systems, semiconductors, functional polymers and molecular metals, among others. They have also found use in photodynamic therapy (PDT). [15-17] Synthesis of Phthalocyanines A number of different methods are available for the synthesis of phthalocyanines. Phthalonitriles are…

    Words: 1318 - Pages: 6
  • Previous
    Page 1 2 3 4 5 6 7 8 9 50

Related Topics:

Popular Topics: