Definition of aromatic amines: It is an organic compound in which there are one or more than one amino groups in the chemical structure of aromatic amine. Considered as aromatic hydrocarbons adjunct to substituents which are from amino type and it is believed that they appear in the period of treat food in a thermal way especially food with a large amount of proteins. Aromatic amines also contain benzidine, B-naphthylamine and 4-amino diphenyl. Also, aromatic amines are chemical compounds which have a huge ability to cause cancer disease for example, there are many workers in the field of industry who exposed to aromatic amines such as the industry of rubber. Synthesis pathways for aromatic amines: 1- Synthesis of aromatic amines using arylation: …show more content…
3- Synthesis of aryl amines through the reaction of Ullmann Reaction There are two types of Ullmann reactions, the first one is the "classic" Ullmann Reaction and the second one is The "Ullmann-type" Reactions. The "classic" Ullmann reaction is the using of copper catalyze coupling to synthesis bialys which are symmatric.the "Ullmann-type" reaction referred to aromatic substitution process which use copper-catalyzed Nucleophilic between many different nucleophiles and aryl halides. The Ullmann Ether Synthesis is the most important reaction of theses reactions. - The mechanism of the Ullmann Reaction: Conjugation between aryl halides using excess of copper at a high temperature (200 °C). avails biaryls. Copper(I) compound is the active group for which an oxidative addition reaction is occur with halide then, reductive reaction and elimination reaction and finally formation of the carbon bond …show more content…
There is an sp2-hybrid orbital in the lone pair of the nitrogen in the ring of pyridine. Forming a proton can be done through the electron pair so the nitrogen atom in the pyridine is basic. 2-Moreover, the lone pair of nitrogen in a pyrrole ring is considered as a part of the aromatic sextet. Therefore, theses electrons are high stable in the system of the aromaticity. And not available to bond with a proton, thus nitrogen of pyrrole ring is not very basic. 3-It is predictable from aniline, pyridine, and pyrrole to know nitrogen atoms reactivity in ring systems which are complex. For instance, tryptophan has a non-basic nitrogen, but adenine has the three types. 4- A nitrile which contains lone pair of electrons, these lone pair electrons are sp hybrid orbital. Therefore, the character of this hybrid orbital means that the nucleus is adjacent to the electrons and thus not basic. Uses of aromatic amines: 1-producting a variety types of azo dye 2-Synthesis of petrol and fusel fuel and varnishes and antioxidant drugs 3-To coat metals in motor 4-Manufactories of plastic and rubber and
Cadet Eric Wiggins Date: 18 September 2014 Course Name: Chem 100 Instructor: Captain Zuniga Section: M3A Identification of a Copper Mineral Intro Minerals are elements or compounds that are created in the Earth by geological processes. The method of isolating metals in a compound mineral is normally conducted through two processes.
Bromination of (E)-Stilbene Kaisha Butz Lab Partner: Jenna Knafo Instructor: Dr. Beatrix Aukszi LA: Paige Swalley 10/28/2014 Abstract: The purpose of this experiment was to synthesize the second intermediate (meso-stilbene dibromide) in the E-Stilbene reaction by Bromination. It was hypothesized that if the reaction was heated at 120°C for five minutes the reaction between E-stilbene and the pyridium bromide perbromide would occur, and meso-stilbene would be created. After the reaction occurred the results were analyzed by IR and by an ignition test.
Petrocelli Through Lorber’s Theories Judith Lorber, a professor emerita of sociology and women’s studies at Brooklyn College and City University of New York, wrote an essay that outlines a major idea in her research; the behaviors that humans think of as “natural” to men and women. Her research in the essay From Believing is Seeing: Biology as Ideology can be used to analyze the reactions and responses in an article by Matthew Petrocelli, Trish Oberweis, and Joseph Petrocelli titled Getting Huge, Getting Ripped: A Qualitative Exploration of Recreational Steroid Use. Through the analyzation of Petrocelli’s article the thesis, due to society forcing a way of looking and acting onto people they will be forced to extreme lengths to fit society’s standards. 2 basic 2 compound 1 periodic 1 cumulative 1 parallel 1 fig of speak 1 work cited In Lorber’s essay she makes the claim “Once the gender category is given, the attributes of the
Lab #1 Beer’s Law Stephanie Redmond Tuesdays 11 am – 1:50 pm Lab partner: Guilherme Bueno Dorea RESULTS Part One (Figure 1) (Figure 2) (Figure 3) (Figure 4)
Benzyne Formation and the Diels-Alder Reaction Preparation of 1,2,3,4 Tetraphenylnaphthalene Aubree Edwards Purpose: 1,2,3,4-tetraphenylnaphthalene is prepared by first producing benzyne via the unstable diazonium salt. Then tetraphenylcyclopentadienone and benzyne undergo a diels-alder reaction to create 1,2,3,4-tetraphenylnaphthalene. Reactions: Procedure: The reaction mixture was created. Tetraphenylcyclopentadienone (0.1197g, 0.3113 mmol) a black solid powder, anthranilic acid ( 0.0482g, 0.3516 mmol) a yellowish sand, and 1,2-dimethoxyethane (1.2 ml) was added to a 5-ml conical vial.
Lecturer Date Introduction Theoretical Background Procedure The procedure was segmented into two categories, the reaction set up and the crude product isolation. Reaction set up The magnetic stirrer was prepared through placing it in the fume cupboard. 1 mmol of L-Phenylalanine was placed and weighed in a 5 mL conical vial.
The reaction to synthesize benzocaine was known as a Fisher esterification reaction. The Fisher esterification was reaction between alcohol and carboxylic acid in the presence of acid. The reaction was used to form an ester. In the experiment, sulfuric acid acted as a catalyst and necessary for this reaction to occur. There was a change between the –OH group of carboxylic acid to an –OCH2CH3 group in the reaction.
The purpose of this experiment is to perform a two step reductive amination using o-vanillin with p-toluidine to synthesize an imine derivative. In this experiment, 0.386 g of o-vanillin and 0.276 g of p-toluidine were mixed into an Erlenmeyer flask. The o-vanillin turned from a green powder to orange layer as it mixed with p-toludine, which was originally a white solid. Ethanol was added as a solvent for this reaction. Sodium borohydride was added in slow portion as the reducing agent, dissolving the precipitate into a yellowish lime solution.
c) Copper (II) Nitrate is the most reactive (#1). Zinc Nitrate is second most reactive (#2). Magnesium Nitrate is the least reactive (#3). d)It is the in the opposite order.
The purpose of this experiment was to learn about metal hydride reduction reactions. Therefore, the sodium borohydride reduction of the ketone, 9-fluorenone was performed to yield the secondary alcohol, 9-fluorenol. Reduction of an organic molecule usually corresponds to decreasing its oxygen content or increasing its hydrogen content. In order to achieve such a chemical change, sodium borohydride (NaBH4) is used as a reducing agent. There are other metal hydrides used in the reduction of carbonyl groups such as lithium aluminum hydride (LiAlH4).
Next, the oxygen is protonated from the 3-nitrobenzaldehyde, which is then followed by an elimination reaction where this acts as a leaving group. The product is the trans-alkene present in the product. After the reaction was completed, purification of the product was conducted using semi-microscale recrystallization.
The study of Green Chemistry emphasizes the reduction of hazards to human health and the larger environment, as well as
It is understood the mechanism is acid-catalyzed where protons coordinate with the carbonyl oxygen to make the carbonyl carbon more electropositive for nucleophilic attack (Scheme 1). In the experimental procedure all reactants were added together, this is inefficient as the protons can coordinate with either trans-cinnamic acid or methanol. Coordination with methanol is unnecessary as it reduces its nucleophilicity and makes less protons available to coordinate with the carboxylic acid. To improve
RESULTS & DISCUSSION The reaction scheme for the oxidation of cyclohexene to adipic acid is shown in Figure 2. This reaction was an ionic addition reaction, and it utilized the oxidizing properties of H2O2 in the presence of WO42-. For this reaction to occur, first Na2WO4 dissociated in the aqueous layer due to its ionic properties and the polarity of water as the solvent. WO42-, a complex stabilized by its resonance contributors, was taken into the organic layer by Aliquat 336, the phase transfer catalyst.
Generally speaking, Friedel-Craft acylation could be useful in a practical application such as industrial chemistry. Using this reaction mechanism can create plastic, synthetic rubber and ethylbenzene, which can eventually lead to polystyrene (Chemical Technology). This reaction can also synthesize high-octane gasoline, commonly referred to as “premium gas.” Therefore, the products generated from Friedel-Crafts acylation are significant because they are used in everyday