EXERCISE 11 SYNTHESIS OF ASPIRIN MARAVILLA‚ Ana Mikaela B Group 4 CHEM 40.1 1L Date performed: September 30‚ 2013 Date submitted: October 7‚ 2013 VI. RESULTS AND DISCUSSION Aspirin is prepared by the esterification of salicylic acid with acetic anhydride under acidic conditions. The phenol group in salicylic acid is replaced by a carboxyl group through electrophilic substitution. The mechanism for the reaction can be summarized
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1 Childhood Obesity Childhood Obesity is an important issue because of the staggering proportions that this disease has reached in the past few years. Certain genetic factors that are paired with changing the lifestyles and culture has produced kids (and some adults) who are generally not as healthy as people were just a few decades ago. Widespread obesity has been the extreme result of these changes. I chose this topic because I have been working with children for the past two years
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SYNTHESIS AND CHARACTERIZATION OF POLYANILINE/POLY (P-HYDROXYANILINE)/Fe3O4 MAGNETIC NANOCOMPOSITE M. R. SABOKTAKIN‚ A. M. MAHARRAMOV‚ M. A. RAMAZANOV Baku State University‚ Baku‚ Azarbaijan E-mail: mamed_r50@mail.ru Several composites have been studied for static dissipationand microwave absorbing materials based on polyaniline with metallic oxides. These composites which are conducting polymers have been widely used because of their lower density as well their good environmental stability as in
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Jennie K. Daniels Organic Chemistry 2121 11 February 2014 Synthesis of Aspirin Salicylic acid derivatives‚ or salicin‚ are found in the bark of the willow tree. In the 5th century B.C.‚ Hippocrates ground the bark into a powder‚ and later‚ the Natives Americans chewed on the bark to alleviate fever and pain1. In the 19th century‚ a German chemist by the name of Felix Hoffman wanted to find a medication that would ease
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Tim Shackleton Professor Murphy English 102 Composition 18 March 2013 Obesity Caused By School Lunch Servings Should Be At Fault Over the past decade in the United States the rate of child obesity has been consistently increasing. A major cause to this increase in obesity is mainly caused by school children’s health over the recent years in relation to what they are eating has raised concerns of different parties when dealing with the situation. The problem that causes debate for this issue
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the problems America is having with health care due to obesity‚ why
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Abstract Introduction The acylation of the α carbon position of a carbonyl group is one of the greatest breakthroughs that has benefited chemists in organic synthesis particularly when in need of building a carbon skeleton of interest in a molecule. For one to be able perform this acylation technique‚ there are two mar approaches which are employable. The first method involves the deprotonation of the α-Carbon atom which has a pKa known to be ̴20 through the use of a strong base for instance
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Childhood Obesity Tara Wright ENG122 Matthew Fox July 23‚ 2012 Childhood Obesity Childhood obesity is a serious concern for youth today. Within the past 30 years childhood obesity has more than tripled. Four out of ten children are considered to be obese (Ogden CL 2010). Often when one sees overweight children‚ one will hear parents making excuses for why their child is overweight. For example one will hear a parent say “she is just big boned‚ or she will grow out of it‚ it’s just baby fat”
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audience to be aware and to adapt new healthy nutritional plans to their obese children‚ which will help them have a higher quality of life. And prevent them from having a low and unhealthy lifetime due to the many illnesses that are attributed to obesity. Central Idea: In our hands are the necessary tools to provide a healthier life for our kids. INTRODUCTION: I. Attention Getter: It is important to know that over the last thirty years the percentage of overweight children in the United States
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Purpose: To synthesize 1‚2‚3‚4-tetraphenylnaphthalene through a two-step 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
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