Subject: Experiment 23: Stereochemistry of the Addition of Bromine to trans-Cinnamic Acid Introduction/Abstract: The purpose of this experiment was to carry out the bromination of trans-cinnamic acid‚ to determine the stereochemistry of the dibromide product of 2‚3-dibromo-3-phenylpropanoic acid‚ and find out whether the reaction proceeds by the usual bromonium ion mechanism or some other mechanism. In this experiment trans-cinnamic acid was mixed with glacial acetic acid and stirred in which
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Introduction An essential oil is a concentrated hydrophobic liquid containing volatile aroma compounds from plants. Essential oils are also known as volatile oils‚ ethereal oils or aetherolea‚ or simply as the "oil of" the plant from which they were extracted‚ such as oil of clove. Volatile oils are the odorous and volatile products of various plant and animal species. As they have a tendency to undergo evaporation on being exposed to the air even at an ambient temperature‚ they are invariably termed
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Maleic anhydride underwent the Dials-Alder reaction with distilled cyclopentadiene as the dienophile. The reaction was a cycloaddition which produced cis-Norbornene-5‚6-endo-dicarboxylic Anhydride surface. (1) Product one had a mass of 9.351 grams and product two had a mass of 9.572 grams. The theoretical yield was found to be 10.047 grams‚ which makes the percent yield to be 93.07%. Melting Points were found to confirm the purity of the product. Product one had a melting point of 163.7-164
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An early observation of fluorescence was described in 1560 byBernardino de Sahagún and in 1565 by Nicolás Monardes in theinfusion known as lignum nephriticum (Latin for "kidney wood"). It was derived from the wood of two tree species‚ Pterocarpus indicus andEysenhardtia polystachya.[2][3][4][5] The chemical compound responsible for this fluorescence is matlaline‚ which is the oxidation product of one of the flavonoids found in this wood.[2] In 1819 Edward D. Clarke[6] and in 1822 René Just Haüy[7] described
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Which of the following is vinyl halide? (a) CH2CL2 (b) CH2= CH-Cl (c) CH = C-Cl (d) 6) What is B in R-OH + PX5 R-X +B+ HX? (a) HPOX3 (b) H3PO3 (c) POX3 (d) H3PO2 7) Which catalyst is used in preparation of bromobenzene by bromination of benzene? (a)FeBr3 (b) HBr (c) AlBr3 (d) Br2 8) By which name the reaction CH3 - Br + Ag- F CH3F + AgBr is known? (a) Grignard (b) Wurtz (c) Fitting (d) Swartz 9) What are nucleophilic reagents according to Lewis theory
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Clays are one of the important natural materials‚ which have been examined for catalytic applications. Clays are characterized by a layered structure and hence they are slippery when wet. They are broadly classified as cationic or smectite type (having layer lattice structure in which two-dimensional oxyanions are separated by layers of hydrated cations) and anionic or brucite type (in which the charge on the layer and the gallery ion is reversed complimentary to smectite type). Anionic clays are
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UNIVERSITI TEKNOLOGI MARA COURSE INFORMATION Confidential Code Course Level Credit Hours Contact Hours : : : : : CHM 556 Organic Chemistry II Degree 4 3 hr (Lecture) 3 hr (Practical) 3 Core CHM 456 Part Course Status Pre-requisite : : : Course Outcomes : Upon completion of this course‚ students should be able to: 1. Determine functional groups present in organic compounds using Infrared Spectroscopy and interpret Nuclear Magnetic Resonance spectra and relate the information to structural
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the starting alkene‚ various stereoisomers will result. In some cases‚ a racemic mixture of products is formed‚ other times a meso compound is produced. The Fischer projections shown above are two possible stereoisomers that could form in the bromination reaction that you will perform. One is the result of a syn addition‚ the other is the result of an anti addition mode. Note that each would form as a racemic mixture‚ (+). You are to determine‚ based on the melting point of your product‚ which
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B) is a deactivator and an o‚p-director. C) is an activator and a m-director. D) is an activator and an o‚p-director. E) none of the above Answer: B 32) Which of the following is an intermediate in the bromination of toluene? A) 13 B) C) D) Answer: B 33) Provide the major organic product of the following reaction. Answer: 14 34) Provide the major organic product which results when PhCHOHCH3 is treated with a chromate (PCC- strong oxidant). Answer:
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Preparation of Bromotriphenylmethane Abstract The structure of a major component of star anise oil was derived by analyzing its IR spectroscopy melting point of after oxidation and purification. From the evidence obtained‚ it was concluded that the exact structured should be p-methoxybenzoic acid. Introduction The purpose of this experiment is to determine the structure of the major component of star anise oil. It is already known that this component has a molecular formula C10H12O. This
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