Multistep Synthesis of Tetraphenylcyclopentadienone Author: Instructor: Date work performed: 10.18.2012--10.25.2012 Date work submitted: 11.01.2012 Abstract: The aim of this experiment was to perform a multistep synthesis to form tetraphenylcyclopentadienone. The first step of the reactions was to synthesize benzoin from the condensation of benzaldehyde. A yield of 28.91% benzoin was obtained. The MP of benzoin was 127O-130O C and the IR spectra displayed a carbonyl peak at 3415 cm-1
Premium Functional group Alcohol Aldehyde
DNA synthesis inhibitors Nucleic acid inhibitors are chemicals which inhibit the production of nucleic acids including both DNA and RNA. DNA and RNA inhibitors inhibit enzyme action in DNA replication in the same way as the topoisomerase inhibitors we discussed earlier. Topoisomerase inhibitors (1) (10) are chemicals which interfere with the enzymes that allow DNA strands to separate and to re-join‚ a process that is required for the division of bacteria and without which DNA cannot effectively
Premium DNA RNA
AP LANGUAGE SYNTHESIS ASSIGNMENT: ARGUMENTATION SYNTHESIS ESSAY PROMPT Since the beginning of the Industrial Revolution labor battles have been a reoccurring issue across the world. In the mid 1800’s to early 1900s the labor battle heated up in America’s cities as workers fought for their rights and corporations fought to keep wages low. To combat the powerful companies‚ workers united together creating the first labor unions. Since their creation‚ the unions have grown in members as they fight
Premium Trade union Employment Collective bargaining
Lab #4 The Synthesis of Organic Polymers CHM2123‚ Section C October 21‚ 2014 Introduction: Organic polymers are macromolecules that are composed of smaller molecules called monomers. There are two main groups of polymers: natural polymers and unnatural (synthetic) polymers. Natural polymers include proteins such as cellulose and starch and are a necessity for our existence. On the other hand‚ synthetic polymers such as the polycarbonate in our lab goggles
Premium Polymer Solvent
NAACP Interview Synthesis For over 100 years our country’s chief social equality association has battled for human rights‚ voting rights‚ monetary rights. The NAACP’s expressed objective was to work to secure the rights ensured in the thirteenth‚ fourteenth and fifteenth revisions to the United States Constitution. From its initiation in 1909 until today the NAACP keeps on pushing forward in political‚ financial‚ and social issues. Today the NAACP has multiple different programs and sub-organizations
Premium African American United States Black people
SYNTHESIS AND CHEMISTRY OF K2S2O8 ABSTRACT In this experiment‚ a sample of K2S2O8 was prepared by the electrolysis of an aqueous solution of H2SO4 and K2SO4. The peroxodisulfate anion‚ S2O82-‚ was also observed for its ability to serve as a counterion for precipitation by preparing a copper (II) complex by reacting hydrated copper (II) sulfate with ammonium peroxodisulfate in the presence of pyridine. This same ability‚ coupled with its strong oxidizing ability allowed for stabilization of
Premium Chemistry Electrochemistry Oxygen
EXP-10 CHEM 233L SYNTHESIS OF p-BROMOANILINE Introduction: In this experiment‚ p-bromoaniline was synthesized in three steps starting from aniline. Since the amino group of aniline is a strong activator of aromatic ring‚ direct bromination is impractical (equation 1). In order to make a desired product‚ amino group needed to be protected as the acetamide which also maintained ortho and para position but slowed down the rate of reaction (equation 2). Slow reaction rate would increase
Premium Acetic acid Solvent
towards the Now phase of perception. He quickly points out that immanent objects only have ". . . one possible way to be given in the original in every Now . . ." which means during the duration of an experience of an immanent object‚ a color for example‚ the object is completely determined and the distinction between appearing and what appears is collapsed(ACPAC553). The reverse is true in the case of external perceptions of transcendent objects. As Husserl states‚ ". . . the spatial object has
Premium Perception Sense Philosophy of perception
was 59.23%. The characteristics of the synthesized ester were liquid‚ oily‚ and it had a banana smell. Introduction Artificial flavoring is commonly used in the food that we eat today. For example‚ fruit flavoring is a chemical mixture that mimics a natural flavor as that of banana flavor from the synthesis of isoamyl acetate. Ester is the functional group‚ which is responsible for the distinctive odor and taste that artificial fruit flavoring has. Esters are derived from carboxylic acids. A carboxylic
Premium Acetic acid Ester Carboxylic acid
Abstract This experiment is about the synthesis of 3-nitrobenzaldehyde through nitration. The nitration of benzaldehyde is an example of an electrophilic aromatic substitution reaction‚ in which a proton of an aromatic ring is replaced by a nitro group. Many aromatic substitution reactions are known to occur when an aromatic substrate is allowed to react with a suitable electrophilic reagent‚ and many other groups besides nitro may be introduced into the ring. Although the reaction produced a low
Premium Electrophilic aromatic substitution Nitration Benzene