of the melting point is very important technique in many areas of chemistry especially‚ in organic chemistry area because the melting point is really significant in order to identify the purity and the identity of a substance. Measuring the melting point is a fast and cost-effective technique which remains a strong link to the vast pre-instrumental chemistry literature‚ so the technique is still used for measuring purity of organic and pharmaceutical compounds. For that reason‚ determination of the
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precursors 1. Abiotic synthesis of simple organic molecules (monomers) a. PROBLEM: Early scientists assumed that organic molecules are formed only by organic life b. SOLUTION: inorganic chemistry found to create organic compounds 1. Miller/ Urey experiments 2. Hydrothermal vents 3. Extraterrestrial origins? 2. Monomers to polymers a. PROBLEM: Complex polymers are generally created via organic enzymatic processes b. SOLUTION: Clay minerals
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The Synthesis of Alkenes: The Dehydration of Cyclohexanol Adam Ohnmacht CHEM 0330 Scott Caplan 10/30/12 Abstract: In Organic Chemistry‚ many different methods are used to synthesize organic compounds from various components. In this lab‚ cyclohexanol was dehydrated to cyclohexene through an elimination reaction. In order to separate the cyclohexene product from the cyclohexanol starting component‚ previously learned lab techniques such as extractions and simple distillation were used.
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dehydration of 2-butanol yielded 4.6% 1-butene‚ 67.3% trans-2-butene‚ and 28.1% cis-2-butene‚ and a dehydrohalogenation of 2-bromobutane yielded 19.1% 1-butene‚ 69.9% trans-2-butene‚ and 11.0% cis-2-butene. Backround: Gas Chromatography separates organic samples much in the same way as column chromatography. The only differences are that it uses a moving gas phase and a stationary liquid phase‚ and that the temperature of the gas system can be controlled. In a gas chromatograph the sample is shot
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Comparative Investigation of Organic Compounds Tristan Duane G. Lacson‚ Lara Elize T. Lamigo‚ Maria Mikaela L. Laysa‚ Christian Gerard G. Lee and Karen L. Li Group 6 2C Pharmacy Organic Chemistry Laboratory ABSTRACT In order to differentiate the organic compounds. The group tested the compounds using the information based on their instinsic physical properties‚ behavior in ignition‚acidity and basicity and their infrared spectra. The physical properties were noted by the reaserchers by
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Robinson Annulation Robinson Annulation is an useful organic reaction. This reaction is named after a British chemist Sir Robert Robinson. The term ’annulation ’stands for ’building a ring ’. In this reaction‚ the formation of α‚ β-unsaturated cyclic ketones from methl vinyl ketones and aldehyde or ketones takes place. Actually this reaction is a combination of two reactions. One is ’Michael Addition ’ and the other is ’Aldol Condensation ’. Robinson Annulation Mechanism In the first step
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References: Attkins‚ R. C.‚ & Carey‚ F. A. Organic Chemistry: A Brief Course; Mc Grawhill Inc.: New York‚ USA‚ 1990; p 205. Bloch‚ D. R. Organic Chemistry Demystified: 2nd Ed; Mc Grawhill Inc.: New York‚ USA‚ 2012; p 395. Langley‚ R. H.‚ & Moore‚ J. T. Organic Chemistry II for Dummies; Wiley Publishing Inc.: Canada‚ 2010; p 139. Mayo‚ D. W.‚ Pike‚ R. M.‚ & Forbes‚ D. C. Microscale Organic Laboratory with Multistep & Multiscale Synthesis: 5th Ed; John Wiley & Sons
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to Tubingen again before taking up the post as director of the organic chemistry department at Heidelberg (1). Wittig became an emeritus professor in 1967‚ where he remained until the end of his notable career (1). In 1967‚ he won the Otto Hahn Prize‚ and in 1979‚ he and Herbert C. Brown were jointly awarded the Nobel Prize for their development of the use of boron and phosphorus-containing compounds for important reagents in organic synthesis (1). The foundation of the Wittig reaction is not complex
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APPLICATIONS OF ORGANIC COMPOUNDS IN LASER TECHNOLOGY WHAT IS AN ORGANIC COMPOUND? An organic compound is any member of a large class of gaseous‚ liquid‚ or solid chemical compounds whose molecules contain carbon. Organic chemistry is the science concerned with all aspects of organic compounds. Organic synthesis is the methodology of their preparation. APPLICATIONS OF ORGANIC COMPOUNDS clothing of cotton‚ wool‚ silk‚ and synthetic fibres; common fuels‚ such as wood‚ coal‚ petroleum‚ and natural
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German organic chemist Hans Fischer (1881-1945) was awarded the Nobel Prize for chemistry in 1930 for his researches into the constitution of hemin and chlorophyll and especially for his synthesis of hemin. Hans Fischer‚ the son of Dr. Eugen Fischer‚ a manufacturer of chemicals‚ was born at Höchst am Main‚ on July 27‚ 1881. He entered the University of Lausanne in 1899‚ read chemistry and medicine‚ and subsequently transferred to the University of Marburg‚ where he graduated in chemistry in 1904
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