Chemical synthesis

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  • Chemical Synthesis

    of this experiment was to perform a synthesis of aspirin/ acetylsalicylic acid from salicylic acid, using a chemical synthesis procedure. The synthesis involved breaking the bond with acetic anhydride, also required heat and a catalyst, phosphoric acid, in order to beak and extract the bond. The solution used water in order to purify the solution in the way of recrystallization. The product was characterized using IR spectroscopy and melting point. The pure aspirin product that was formed in this experiment which had a chemical yield of 54.3% and had a melting point range of 117.8-125.2C. Chemical Synthesis is a process that starts with a simple structure, which then breaks and forms new bonds in order to create a new complex structure.…

    Words: 805 - Pages: 4
  • 12 Principles Of Ibuprofen

    Green Synthesis of Ibuprofen Green Chemistry is a new approach and perspective of chemistry that can improve human lives and maximize efficiency. It is a branch in chemistry that explores and examines techniques to reduce and eliminate hazardous and harmful substances. These harmful substances effect humans and the environment in multiple ways, the twelve principles of Green Chemistry can help minimize them. The twelve principles include prevention of waste, the design of less hazardous…

    Words: 820 - Pages: 4
  • Nucleoside's Susceptibility To Depurination

    α-phenylcinnamoyl, naphthaloyl, 3-methoxy-4-phenoxybenzoyl, 9-fluorenylmethoxycarbonyl (FMOC), and tert-butylphenoxyacetyl (t-PAC) groups (Figure 2.1.7) provides greater resistance to depurination than with N6-benzoyl (reviewed in Beaucage and Iyer, 1992). It is believed that in the case of acyl-protected purine nucleosides under acidic conditions, the initial site of protonation is N7, rendering the protonated species more prone to glycosidic cleavage. Naturally, caution should be exercised in…

    Words: 1764 - Pages: 8
  • Solid Phase Synthesis Essay

    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…

    Words: 877 - Pages: 4
  • Ballad Of The Sad Cafe And Anthony

    The trope of nostalgic and wistful people looking back on their teen years, the good years, approaches stereotype. Julian Barnes’s The Sense of an Ending, on the surface, appears to employ the same stereotype of a wistful old man experiencing a bout of retrospection for his lost friend and the times he once had. The narrator of Carson McCullers’s “Ballad of the Sad Café” in The Ballad of the Sad Café works with the same forlorn recollection of when the town was more alive. Both narrators use two…

    Words: 1401 - Pages: 6
  • What Is Neo-Darwinism?

    Evolutionary biologists such as Richard Dawkins1 , Paul Meyers2, and Jerry Coyne3, and philosophers of science such as Daniel Dennett4, Micheal Ruse5, and Peter Singer6 have produced differing defences and explanations of Darwinism, its roots, and its various implications within a Neo-Darwinian framework. In many cases, these have been intended for wider consumption beyond academia and have incorporated the promotion of Darwin as a unique historical agent, with Dawkins arguably leading the pack…

    Words: 1608 - Pages: 6
  • Evolution: Evolution, Evolution And Micro-Evolution

    What is science? Science is a process that we use to discover new things about our world. It is, to quote The Merriam-Webster dictionary science is “knowledge about or study of the natural world based on facts learned through experiments and observation.” Science is realization through observation and experimentation. Science can never truly “prove” anything. All science can do is give us, as humanity, more of an idea as to what goes on in our physical world; however, everything science can…

    Words: 1082 - Pages: 4
  • Charles Darwin's The Origin Of Species

    The changes in species have been explored by many scientists, but Charles Darwin was the first to support his findings on the existence of evolution with abundant evidence. Darwin later came to develop the theory of evolution after his voyage on the HMS Beagle to South America in 1831 for five years. Darwin was an English geologist and naturalist who proposed that organisms have had physical and behavioral changes over time to increase reproductive success and to better adapt to the environment.…

    Words: 1936 - Pages: 8
  • Measurable Outcomes

    Measurable Outcomes 1. Describe and demonstrate knowledge of modern evolutionary synthesis, natural selection, population genetics, micro and macroevolution, and speciation. I learned about the speciation of animals in Module 3 and in Module 4 I learned about modern evolutionary synthesis, natural selection, population genetics, and mirco and macroevolution. I was able to learn all this information due to the chapter 46 and chapter 47 notes, the online textbook, and the PowerPoint notes. This…

    Words: 1963 - Pages: 8
  • Summary Of Reaction Journal Five: Functionalism

    Reaction Journal Five: Functionalism This week’s reading was over the beginnings of the radical functionalist movement that was lead by Charles Darwin. Darwin was more concerned with how an organism functioned and adapted to change than the perception, sensations, and the structure of consciousness as his fellow psychologists Wundt and Titchener were. Darwin lived a life of privilege and traveled extensively during his lifetime. During his travels, he observed many animal species and made…

    Words: 762 - Pages: 4
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