The Michael addition is a reaction named after Arthur Michael. Discovered in 1887‚ this is a carbon-carbon bond making reaction. The result of the Michael addition is a 1‚4 addition of a nucleophile to an alpha‚ beta-unsaturated carbonyl carbon compound. A 1‚4 addition is also commonly referred to as a conjugated addition. Another result of this reaction is a 1‚2 addition of a nucleophile. Some of the common attacking nucleophiles used in this reaction are enolates. Enolates‚ a negatively charged
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in heptanes (3 mls/student)‚ 95% ethanol (20 mls/student) wk 4: 1‚3 diphenylacetone (0.5 g/student)‚ triethylene glycol (5 mls/student)‚ 40% benzyltrimethylammonium hydroxide/methanol (0.5 mls/student) Part A: Thiamine catalyzed condensation benzoin condensation of benzaldehyde Procedure: (Week 1) Dissolve
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content as compared to the sample calcined at 673 K. This behaviour is assuemed to exist in many of the formaldehyde involved condernsations. Chaudhary et al [] have been successful in carrying out the aldol condensation reactions with uncalcined Mg-Al O TBu catalyst which gave excellent yield of aldols with no further dehydration at a temperature as low as 273 K.
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Jogarajah@mail.utoronto.ca Abstract – Add text here Introduction: The name of this reaction is called the Perkin’s reaction. The reaction was first used by William Perkin to create phenylcinnamic acids (Johnson). It is very similar to the aldol condensation which is followed by elimination. In this reaction E and Z isomers of phenylcinnamic acid are created using benzaldehyde and acetic anhydride. The intermediate product is acetic phenyl acetic anhydride. Benzaldehyde is an aromatic compound that
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identification method used was through Melting Point Determination. By obtaining data of the melting points of the 2 purified compounds and cross-referencing from a list of possible organic compounds‚ the 2 organic compounds were identified to be Dibenzalacetone (Neutral) and o-Chlorobenzoic acid (Acidic). Results A solubility test was conducted to determine the recrystallization solvent to be used for the 2 compounds. The solvents used in the test were water and ethanol‚ both under room temperature
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carbon-carbon bonds are important in organic synthesis [1-5]. In general‚ acylation reaction is one of the important carbon-carbon forming reactions. It belongs to the reactions of the enolate derived from a carbonyl group with an electrophilic carbon such as Aldol‚ Claisen‚ Michael reaction and alkylation of metal enolates [6-9].The acylation reaction as well as above other reactions of enolates has serious limitations to be overcome. In these reactions‚ a strong base NaOH is needed to transform the carbonyl
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Quiz #1 Attempt 1 Written: Jul 7‚ 2012 9:48 AM - Jul 7‚ 2012 9:50 AM Submission View Your quiz has been submitted successfully. Question 1 1 / 1 point At what time do you have to complete your online prelab assignment to be allowed to participate in the lab? Question options: A week before the lab Day before the lab at 10 pm The morning of lab day at 8 am One hour before the lab Question 2 1 / 1 point Which materials/chemicals belong in the desiccator? Question options: Drying
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EXPERIMENT OBJECTIVE The aim of this experiment is synthesize hexaphenylbenzene via an aldol condensation reaction‚ followed by a Diels-Alder [4+2] cycloaddtion. This is final step in the multistep synthesis pathway to form hexaphenylbenzene‚ and uses the products of the previous experiments: benzil and diphenylacetylene REACTION DIAGRAM TABLE OF REAGENTS BENZIL DIBENZYL KETONE TRITON B 40wt% IN METHANOL (1.79 M) TRIETHYLENE GLYCOL TETRAPHENYL-CYCLOPENTA-DIENONE DIPHENYL ACETYLENE
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Chemistry GENERAL CHEMISTRY: Atomic Structure and elementary quantum mechanics: Blackbody radiation‚ Planck’s radiation law‚ photoelectric effect‚ Compton Effect‚ de Broglie’s hypothesis‚ Heisenberg’s uncertainty principle. Postulates of quantum mechanics‚ Schrodinger wave equation and a particle in a box‚ energy levels‚ wave functions and probability densities‚ Schrodinger wave equation for H-atom‚ Separation of variables‚ Radial and angular functions‚ hydrogen like wave functions‚ quantum numbers
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Chem 3650 Organic II Lab Lecture Summer 2013 Instructor: Victoria Dougherty M.S. Victoria Dougherty M.S. Office: BSE 1.340 Phone: 458-5473 (I do not have voicemail) Office Hours: Tuesday and Thursday: noon – 1:00 pm (or by appointment) Monday and Wednesday: 1:00 pm to 2:00 pm E-mail: victoria.dougherty@utsa.edu (put Chem 3650 in subject) Lab instructors and sections: Lab instructors Email (put Chem 3652 in subject) Section(s) Times Marilyn Wooten PhD. marilyn.wooten@gmail.com 01T 7:30–11:20
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