View Online 551 Downloaded by University of Washington on 01 February 2011 Published on 01 January 1959 on http://pubs.rsc.org | doi:10.1039/JR9590000551 113. The Organic Chemistry of the Transition Elements. Part I. Tricarbonylchromium Derivatives of Aromatic Compounds. By B. NICHOLLS M. C. WHITING. and Many aromatic compounds‚ ArH‚ displace carbon monoxide from chromium hexacarbonyl with the formation of complexes Cr(CO)‚(ArH) (I). These are stable and may carry any of several functional
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British Journal of Pharmacology (2003) 139‚ 1523–1531 & 2003 Nature Publishing Group All rights reserved 0007 – 1188/03 $25.00 www.nature.com/bjp Phenylglycine derivatives as antagonists of group III metabotropic glutamate receptors expressed on neonatal rat primary afferent terminals 1 Jacqueline C. Miller‚ 1Patrick A. Howson‚ 1Stuart J. Conway‚ 1Richard V. Williams‚ Barry P. Clark & *‚1David E. Jane 2 1 Department of Pharmacology‚ School of Medical Sciences‚ Bristol BS8 1TD
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Compare and contrast the presentation of the poets’ attitudes to progress in Unknown Girl and Electricity Comes to Cocoa Bottom. People have been thinking about what ‘progress’ means for hundreds of years. We normally associate it with positive impacts and things changing for the better‚ which the majority of the time is correct. Edward E Cummings once said ‘Nothing recedes like progress.’ and in the poems ‘Unknown Girl’ and ‘Electricity Comes to Cocoa Bottom’ the poets agree with this statement
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Scientific Paper 4-10-13 Determining the Unknown Genotype of Corn Plants of the Zea mays Species from the Phenotypes of Offspring Produced Abstract No one particular organism is an exact replica of another. Diversity in the world is key for future generations to adapt to the fast changing world. This lab observed the corn plant of the Zea mays species to determine the genotype for the gene of tall versus dwarf in unknown parent corn plants by observing the seedlings produced. It was hypothesized
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Modelling xxx (2009) xxx–xxx Contents lists available at ScienceDirect Journal of Molecular Graphics and Modelling journal homepage: www.elsevier.com/locate/JMGM Genome wide analysis and comparative docking studies of new diaryl furan derivatives against human cyclooxygenase-2‚ lipoxygenase‚ thromboxane synthase and prostacyclin synthase enzymes involved in inflammatory pathway P. Nataraj Sekhar a‚ L. Ananda Reddy a‚*‚ Marc De Maeyer b‚ K. Praveen Kumar c‚ Y.S. Srinivasulu c‚ M.S.L. Sunitha
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classified as a carboxylic acid. Establish an equivalence value for the unknown to estimate its molecular weight. The equivalent weight or neutralization equivalent for the carboxylic acid can be obtained from the base. It is most important that you accurately weigh your sample of acid and titrate to a phenolphthalein (colorless to pink color) end point using an accurately known dilute solution of sodium hydroxide (0.1000 M). If your unknown is soluble in a greater than 50% ethanol/water mixture‚ then use
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done by preliminary test and with the solubility test. Preliminary test used two known compounds also the unknowns. Physical state‚ color‚ odor‚ and ignition test were noted. The known compounds are inorganic and organic compounds. A comparison is made from the observation in the unknown sample‚ by which we had concluded that there were two organic compounds and one inorganic among the unknowns. In order to have a strong background about the solubility test‚ we first classify organic compounds of known
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chemical properties of aldehydes‚ ketones‚ carboxylic acid‚ carboxylic acid derivatives and amines. Write‚ explain and solve problems related the reaction mechanisms for nucleophilic addtition of carbonyl compounds and nucleophilic acyl substitution of carboxylic acids and their derivatives. Develop synthetic methods for preparations of various types of aldehydes‚ ketones‚ carboxylic acids‚ carboxylic acid derivatives and amines. Plan‚ conduct‚ observe and report experiments in organic chemistry 2
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Functional Groups of Organic Compounds A functional group is a specific arrangement of atoms in the HC derivative other than carbon and hydrogen. Literally‚ the functional group determines the functions of the particular HC derivative in chemical reactions. This means that the specific properties of the HC derivative are due to its functional group. Each functional group is attached to an alkyl radical (R). An alkyl radical is one H atom less than the given alkane. The alkyl radical (R) uses
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molecule of ammonia or an amine. An example of an aminolysis reaction is the replacement of a halogen in an alkyl group (R-X) by an amine (R’-NH2) and the elimination of hydrogen halide (HX). R-X + R’-NH2 → R-NH-R’ + HX Another common example is the reaction of a primary amine or secondary amine with a carboxylic acid or with a carboxylic acid derivative to form an amide. This reaction is widely used‚ especially in the synthesis of peptides. On the simple addition of an amine to a carboxylic acid
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