synthesis. The aldol condensation reaction between benzil and dibenzyl ketone forms 2‚3‚4‚5-tetraphenylcyclopentadienone‚ which then reacts with a benzene formed by anthranilic acid and isoamyl nitrate in order to yield 1‚2‚3‚4-tetraphenylnaphthalene. Reaction Equation A: Synthesis of 2‚3‚4‚5-tetraphenylcyclopentadienone: A solution of 4 capsules potassium hydroxide (0.5g) and 5mL anhydrous ethanol was prepared and warmed in a 25mL beaker. Benzil (2.1542g) ‚ dibenzyl ketone (1.9599g) ‚ 15mL
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UV Spectroscopy: UV spectroscopy is concerned with ranges from 190 to 370 nm. Compound which are colourless absorb radiation in UV range. In both UV as well as visible spectroscopy only the valence electrons absorb the energy there by molecule undergoes transition from ground state to exited state. This absorbance is characteristic and depends on the nature of the electron present. The intensity of the electron depends on the concentration and path length as given by Lambert beer’s law. Lambert
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of dibenzyl ketone (1‚3-diphenyl-2-propanone) with benzil in the presence of base. The reaction then proceeded with an aldol condensation reaction.5 This product was obtained using extraction (reflux)‚ recrystallization and vacuum filtration to separate the product from the waste. Experiment Scheme: Figure 1: Experiment Reaction5 Figure 2: Step wise reaction mechanism including aldol condensation reaction5 Procedure: About 1.55-g of benzil‚ 1.51-g of dibenzylketone and 12-mL of ethanol were
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CHM 138H INTRODUCTORY ORGANIC CHEMISTRY I TERM TEST II March 18th 2010 TOTAL MARKS: 70 NAME (PRINT): ___________________________ Student #: ______________________ TUTORIAL GROUP #: ___________ Answer all questions in the spaces provided on the accompanying answer sheet. It is attached to the back of the test paper. You may detach the answer sheet. Nothing on this question sheet will be marked. PRINT YOUR NAME‚ STUDENT NUMBER‚ and TUTORIAL GROUP NUMBER on this test
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Chapter 17: Alcohols and Phenols C O O H H sp3 alcohol pKa~ 16-18 phenol (aromatic alcohol) pKa~ 10 Alcohols contain an OH group connected to a saturated carbon (sp3) Phenols contain an OH group connected to a carbon of a benzene ring O H C C H C C O chemistry dominated by the keto form 76 enol keto H O H R O H R O R R O O R’ water alcohol R S H ether R S R peroxide R S S R’ thiols thioether disulfides
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Panther ID: NAME: FLORIDA INTERNATIONAL UNIVERSITY Department of Chemistry CHM 2211-U02– ORGANIC CHEMISTRY II PRACTICE EXAM I CHM 2211-U01 SAMPLE EXAM I‚ Page 2 Type of Vibration C-H Frequency (cm-1) 3000-2850 1450 and 1375 1465 3100-3000 1700-1000 3150-3050 1000-700 ca. 3300 2900-2800 2800-2700 1680-1600 1600-1400 2250-2100 1740-1720 1725-1705 1725-1700 1750-1730 1700-1640 1810 and 1760 1300-1000 Intensity s m m m s s s m w w m-w m-w m-w s s s s s s s Alkanes -CH3 -CH2Alkenes
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Gold Nanoparticles for Diagnosis and Treatment of Cancer Abstract—Nanotechnology has been an extremely hot topic over the decade. It is the science‚ engineering and technology conducted at nanoscale. Two of the main applications of nanotechnology include material science and biomedicine. We have achieved great strides in applying nanotechnology to material science that is well justified by the decreasing size of electronics available in market. However we haven’t made a mark in biomedicine yet
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a mercury electrode where a metal can be reduced‚ the metal will often then dissolve in the mercury to form an amalgam that modifies its electrochemistry greatly. For example‚ it is possible for sodium cations to be reduced at a mercury cathode to form sodium amalgam‚ while at an inert electrode (such as platinum) the sodium cations are not reduced. Instead‚ water is reduced to hydrogen. A detergent or fine solid can be used to stabilize an emulsion‚ or third phase. Contents [hide] * 1 Measures of
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HYPERNATREMIA) AND SODIUM BALANCE (HYPOVOLEMIA AND EDEMA) Literature review current through: Sep 2013. | This topic last updated: ene 15‚ 2013. 1. INTRODUCTION — The plasma sodium concentration is regulated by changes in water intake and excretion‚ not by changes in sodium balance. hyponatremia is primarily due to the intake of water that cannot be excreted hypernatremia is primarily due to the loss of water that has not been replaced hypovolemia represents the loss of sodium and water edema
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Microbiology Lab Quiz #2 Study Guide Exercise 9 -- The Gram Stain Compare and contrast simple and differential staining techniques. Simple Staining Simple staining is useful in determining the basic morphology of an organism. Simple staining involves only one reagent i.e. crystal violet‚ basic fuchsin‚ or methylene blue. Simple dyes used to stain bacteria have a positive charge cationic (+)‚ therefore‚ they are attracted to the bacteria that are usually negatively charged anionic (-) Depends
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