Diels-Alder Synthesis of Exo-Norbornene-cis-5‚6-Dicarboxylic Anhydride for Organic Chemistry Laboratory Instruction Kyle Myers and Dr. James Roark University of Nebraska at Kearney‚ Department of Chemistry‚ Kearney‚ NE 68849 Abstract A technique for the Diels-Alder synthesis of endo-norbornene-cis-5‚6dicarboxylic anhydride and its stereoisomer‚ exo-norbornene-cis-5‚6-dicarboxylic anhydride‚ is explained. To prove that each stereoisomer was made in the experiment and to distinguish between the
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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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Ronak Parikh U30682934 Experiment 2: Diels-Alder Reaction: Synthesis of cis-Norbornene-5‚6-endo-dicaroboxylic anhydride Introduction: The main goal of this experiment is to perform a Diels-Alder reaction between 2‚3-dimethyl-1‚3-butadiene and maleic anhydride‚ identify the product and hydrolyze to form the dicarboxylic acid. Diels alder reactions are classified as pericyclic reaction‚ which is a reaction which involves a cyclic rearrangement of bonding electrons‚ which means
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Cowley Paper #1 During the sixteenth‚ seventeenth‚ and eighteenth century the primary driving force for all cultures can be summed up by one simple word‚ and that word is greed. Many of the countries that had power at the time were greedy savages and all they wanted was more land and power. Countries that were powerful at the time were Spain‚ Portugal‚ Japan‚ and others. Also in the countries the governing body of them had their way or the highway they did not care what had to be done or who
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When the word silence is used by Shusaku Endo it is to represent a lack of action. Rodrigues is a very devout Christian who has dedicated his entire life to helping those in need and helping spread the knowledge of his religion. Throughout his journey he finds himself in the opposite situation. He finds himself to be the cause of pain and suffering‚ brought on by the Japanese government and Inoue in particular. Silence is a story of transformation; not only physical transformations but mental
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they have restricted rotation around the double bond so they tend to form the cis and trans geometric isomers. While both of these isomers have the same molecular formula‚ they usually vary in many physical features. Cis isomers have two identical groups located on the same side of the double bond‚ while trans isomers have the two groups on opposing sides of the molecule. Trans isomers are usually more stable than cis isomers because there is no steric interaction‚ or repulsion‚ between the carboxyl
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I. INTRODUCTION Synthesis Acetylsalicylic acid is an acetyl derivative of salicylic acid which appears as a white and crystalline and a weakly acidic substance with a melting point of 135°C and is also known to be aspirin. It is one of the most widely used drugs that can lower fever and is used as a painkiller. According to (Escobel‚ 2011)‚ Aspirin is synthesized through the reaction of salicylic acid with acetyl anhydride that causes a chemical reaction that turns salicylic acid’s hydroxyl group
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Silence was published in 1966 by a Japanese Catholic author‚ Shusaku Endo. The setting takes place in the 17th Century‚ in Japan. Priest are banned and the government becomes more strict on Christianity‚ which then pushes people into hiding. Father Ferreira’s two former students‚ in Rome‚ are in denial to believe that the missionary could betray his faith. This is where we get introduced to two former European Catholic Priest‚ Father Rodrigues and Father Garrpe‚ they want to travel to Japan to
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Page 1 of 15 CEBU CPAR CENTER Mandaue City‚ Cebu AUDITING THEORY AUDITING IN A COMPUTER INFORMATION SYSTEMS (CIS) ENVIRONMENT Related PSAs/PAPSs: PSA 401; PAPS 1001‚ 1002‚ 1003‚ 1008 and 1009 PSA 401 – Auditing in a Computer Information Systems (CIS) Environment 1. Which statement is incorrect when auditing in a CIS environment? a. A CIS environment exists when a computer of any type or size is involved in the processing by the entity of financial information of significance to the audit
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1. Distinguish between internal control in a CIS environment and in non-CIS environment. A CIS environment exists when a computer of any type or size is involved in the processing by the entity of financial information of significance to the audit; whether that computer is operated by the entity or by a third party. Many of the control procedures used in manual processing also apply in a CIS environment. Examples of such control procedures include authorization of transaction‚ proper segregation
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