Diels-Alder Reaction: Synthesis of cis-Norbornene-5‚ 6-endo-dicarboxylic anhydride Introduction: The Diels-Alder reaction is a [4+2] cycloaddition of a conjugated diene and a dienophile. This type of reaction was named for Otto Diels and Kurt Alder who were the first to investigate this reaction (Weldegirma‚ 2012). The Diels- Alder reaction is one of the most important reactions in all of organic chemistry because of the applicability of it. This reaction can form
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In “Deep River” by Shusaku Endo‚ Mitsuko Narusea one of the main characters goes on a tour to India. She is hoping to find herself‚ she doesn’t know what she wants and hopes this trip will help her find out. The theme of failure is prevailed throughout the story. In “Deep River‚” Mitsuko fails at her attempt to find herself and failed at making Otsu nonreligious. In Endo’s novel Mitsuko is portrayed as a selfish and atheist women. Mitsuko had a failed marriage and comes to the epiphany of her
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Cited: Endō‚ Shūsaku. Silence. Tokyo: Kodansha International‚ 1982. Print. The Holy Bible: New International Version. Colorado Springs‚ CO: International Bible Society‚ 1984. Print. Pattison‚ John‚ and Philip Yancey. "Shusaku Endo’s “Silence”." Patheos.com. N.p.‚ 27 Mar. 2013. Web. 3 Dec. 2013. Swain‚ David L. “The Anguish of an Alien: Confessions of a Japanese Christian‚” in The Christian Century‚ Vol. 112 No. 34‚ November 22-29‚ 1995‚ pp. 1120-25
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export of Endo Snowboard Company’s snowboards‚ to the Norwegian market. Endo Snowboards is a relatively new (two years old) snowboard manufacturing company based out of Thunder Bay‚ Ontario‚ Canada. It is small in size with only 20 employees. The employee’s core competencies include manufacturing‚ marketing‚ artistic and business skills. The highly skilled employees have caught the attention of many local investors to make the export of this product possible. The main objectives for Endo Snowboards
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sublimation and then be analyzed by Infrared spectroscopy and melting point test. Procedure and ObservationsPlease refer to the lab manual and the carbon copy attached. Data and CalculationsWeight of endo-borneol = 0.2013gNo of moles of endo-borneol = 0.2013g/154.25g mol-1 = 1. 305mmolSince one mole of endo-borneol should give one mole of camphorTheoretical yield of camphor = (1.305 mmol )( 152.23g mol-1) = 0. 1987gTheoretical melting point of camphor = 179.75 oCActual Yield of the product (camphor)
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the first Supreme Court rulings in which the United States ruled to respect the rights of an un-trusted minority‚ and therefore the Endo decision was a turning point for human rights in America. Many of the violations to human rights in the United States that predate Ex Parte Endo would have been deemed illegal if they were to occur nowadays‚ in part due to the Endo decision. One of these violations to human rights was the Indian Removal Act of 1830. This Act called for the relocation of the Cherokee
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prepare an endo‚cis-diacid from the synthesis of the bicyclic anhydride (cis-Norbonene-5‚6-endo-dicarboxylic anhydride). The percent yield of the product was calculated and found to be 39.01%. The infrared spectroscopy confirmed the presence of a O-H group with a stretch at 2948.03 1/cm and the presence of C=O with a stretch at 1698.93 1/cm. Melting point determination found the melting point range of the products to be 149.2-164.1 for the bicyclic anhydride and 169.4-179.5 for the endo-cis‚diacid
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one stereoisomer may form‚ it is important to know that the major product will be the one with the transition state for the endo stereochemistry while the minor product will be for the exo stereochemistry. The reason for this is because the reaction favors the product that involves the maximum overlap of pi electrons in its transition state‚ which in this case‚ is the endo isomer. To ease the concerns of orbital overlap between the HOMO (Highest Occupied Molecular Orbital) of cyclopentadiene with
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reactions‚ there is both a major product and a minor product. In the case of the Diels-Alder reaction one product is referred to as endo and the other as exo‚ both of which refer to the stereochemistry of the product. The reaction favors the product that has the most orbital overlap (Weldegirma 81). This is determined by looking at the outside groups. For example‚ “the endo product is the one where the outside groups on the diene are on the same side of the 6-membered ring as the electron withdrawing
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A Diels-Alder reaction was performed in this experiment. Which is a reaction that was discovered by Otto Diels and Kurt Alder. This particular type of reaction is the concerted cycloaddition among a dienophile and a diene. The Diels-Alder reaction allows for the synthesis of stereospecific rings in an efficient manner. This reaction proceed in a single step method‚ otherwise known as Nucleophilic Substitution in the second order (SN2). The Diels-Alder reaction is categorized as a pericyclic reaction
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