Organic synthesis

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  • Organic Chemistry Synthesis

    Extraction was the main method of removing compounds from the sample. The component X was removed from the sample by first adding the organic solvent dichloromethane to the test tube. After aggravation, the component X dissolved into the solvent. Since components Y and Z were insoluble in the organic solvent they remained as solids. The test tube was then placed into a centrifuge and ran for thirty seconds. By doing so, the unsettled solid were forced to accumulate at the bottom of the test tube. This allowed for a more effective decantation of aqueous solution that contained component X onto the watch glass. Repetition of this extraction processes ensured that most of component X was separated from the sample. Once three washes were done, the aqueous…

    Words: 768 - 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
  • 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
  • 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
  • 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
  • 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
  • Charles Darwin's Influence On Natural Selection

    Charles Darwin and by extension, Alfred Russell Wallace, were heavily inspired by several intellectual influences while collaborating together on ‘Natural Selection.’ Some are more prominent figures, while others are an inspiration by proxy, such as James Hutton. Charles Lyell’s book Principles of Geology. Lyell’s theory that minute changes would gradually increase over long periods of time helped Darwin theorize and coin the term Natural Selection, and with Lyell’s encouragement, he began…

    Words: 501 - Pages: 3
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