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Question5 You will carry out the following reaction in this experiment. NaOH (aq) ethanol ?? acetone...
Draw the different geometric isomers for dibenzalacetone (there are 3 of them). Why is the trans...
Draw the different geometric isomers for dibenzalacetone (there are
3 of them). Why is the trans isomer formed in this experiment?
The purpose of this experiment is to svnthesize dibenzalacetone (trans, trans-1. 5-diphenvl-1.4 pentadien-3-one) through the Aldol condensation of acetone with benzaldehyde. The synthesis begins bv using a strong base to generate the acetone enolate ion. Water (not shown) is formed as a byproduct. The equilibrium position of this reaction strongly favors the starting acetone, and the amount of acetone...
Please answer the following questions/fill in the data tables based on the following experiment. EXPERIMENTAL PROCEDURE:...
Please answer the following questions/fill in the data tables based on the following experiment. EXPERIMENTAL PROCEDURE: Place sodium hydroxide (2.500 g) in a 100 mL Erlenmeyer flask and add water (25.0 mL) and ethanol (20.0 mL). Add a magnetic stirrer bar and stir until all the NaOH has dissolved. To a second reaction vessel, add benzaldehyde (2.650 g, 0.025 mol) and acetone (0.725 g, 0.0125 mol). Add approximately half of the aldehyde-ketone solution to the sodium hydroxide solution, and stir...
Which solvent (acetone or t-butyl alcohol) would be better to carry out the following reaction? Why?...
Which solvent (acetone or t-butyl alcohol) would be better to carry out the following reaction? Why? Draw the complete mechanism of this reaction using generic base B. CI
Мар сар reagents and conditions necessary to efficiently carry out the following muti-skom NaOH, acetone rom...
Мар сар reagents and conditions necessary to efficiently carry out the following muti-skom NaOH, acetone rom the starting material on the left to the product on the right. Do not worry a 1. LDA, THF, -78 C, 2. NaOH, H20, heat PPh3, n-Buli 1. ethyl acetoacetate, 2. NaoÉt, HOE 1. NaOET, HOEt, methyl vinyl ketone H2, Pd-C (one equiv.) Mapa Show any steps, reagents and conditions necessary to efficiently carry out the following muti-step transformations from the sta NaOH, acetone...
Temperature, Question 7 (13 marks) Acetone is brominated in acidic solution according to the following reaction:...
Temperature, Question 7 (13 marks) Acetone is brominated in acidic solution according to the following reaction: CH3COCH3(aq) + Br2(aq) - CH3COCH_Br(aq) + H" (aq) + Br" (aq) Student A proposed the following four-step mechanism for the decomposition of Bra: CH3COCH3 + H + CH3C(OH)CH3 ki, ki CH,C(OH)CH3 -CH:C(OH)-CH2 + H+ ka, slow CH;C(OH)=CH2 + Br2 - CH3C(OH)CH2Br* + Br k3 CH:C(OH)CH2Br* - CH3COCH2Br + H+ k4 Deduce the rate law for the above reaction by assuming a pre-equilibrium (7 marks)...
PRE-LAB QUIZ for EXPERIMENT 27 Name 1. In Experiment 27, a modified Perkin reaction is performed....
PRE-LAB QUIZ for EXPERIMENT 27 Name 1. In Experiment 27, a modified Perkin reaction is performed. The Perkin reaction is a carbonyl condensation reaction that is related to the Claisen condensation and aldol condensation. In this experiment, the reactants are benzaldehyde and 3-benzoylpropionic acid with sodium acetate and acetic anhydride as catalysts. Draw the structures of these compounds in the space below. benzaldehyde 3-benzoylpropionic acid acetic anhydride 2. The first step of the reaction is the formation of the mixed...
HClaa)+ NaOH)+NaC) H (a) C (aa)+ Na (OH ()H2+Na )+ CI Figure 2 - Reaction of...
HClaa)+ NaOH)+NaC) H (a) C (aa)+ Na (OH ()H2+Na )+ CI Figure 2 - Reaction of hydrochloric acid with sodium hydroxide (aq) (Reaction 2) With this in mind, write the chemical reactions for each synthetic step in this experiment using the correct phase notation for each chemical species. a. The reaction of aluminum with potassium hydroxide. b. The first reaction of sulfuric acid with KA(OH)4 (a) c. The second reaction of sulfuric acid with Al(OH)3 (o)- d. The reaction to...
The acetoacetic ester synthesis is a carbonyl alkylation reaction. It is used to prepare methyl ketones...
The acetoacetic ester synthesis is a carbonyl alkylation reaction. It is used to prepare methyl ketones from primary alkyl halides, lengthening the carbon chain by three atoms. Thus, the product can be visualized as being a "substituted acetone." The reaction consists of three steps: generation of the enolate anion followed by S2 reaction with a primary alkyl halide, ester hydrolysis under acid conditions, and decarboxylation. 1. NaOEt 2. H2O* 3. heat Br + - H₃C + CO2 + ETOH Hc...
Complete the mechanism for the reaction of butanone hydrate to produce butanone under conditinos of NaOH...
Complete the mechanism for the reaction of butanone hydrate to produce butanone under conditinos of NaOH in water. A reversible reaction takes place, but we will just draw the arrows for formation of the carbonyl in this problem. :0: Hö: OH NaOH H2O :0: Step Step H-Ö ÖH OH : HT Two One :0H Draw the arrows for the 3-step mechanism in formation of the hydrate. (This would not build up and be isolated, but show how it would form.)...
A student is trying to carry out an Aldol Reaction. Indicate if the starting materials under...
A student is trying to carry out an Aldol Reaction. Indicate if the starting materials under the reaction conditions shown will produce this product. NaOH/H,O-CH,OH CH3 НО HO CH 3 ОО
Draw the different geometric isomers for dibenzalacetone (there are
3 of them). Why is the trans isomer formed in this experiment?
The purpose of this experiment is to svnthesize dibenzalacetone (trans, trans-1. 5-diphenvl-1.4 pentadien-3-one) through the Aldol condensation of acetone with benzaldehyde. The synthesis begins bv using a strong base to generate the acetone enolate ion. Water (not shown) is formed as a byproduct. The equilibrium position of this reaction strongly favors the starting acetone, and the amount of acetone...
Which solvent (acetone or t-butyl alcohol) would be better to carry out the following reaction? Why? Draw the complete mechanism of this reaction using generic base B. CI
Мар сар reagents and conditions necessary to efficiently carry out the following muti-skom NaOH, acetone rom the starting material on the left to the product on the right. Do not worry a 1. LDA, THF, -78 C, 2. NaOH, H20, heat PPh3, n-Buli 1. ethyl acetoacetate, 2. NaoÉt, HOE 1. NaOET, HOEt, methyl vinyl ketone H2, Pd-C (one equiv.) Mapa Show any steps, reagents and conditions necessary to efficiently carry out the following muti-step transformations from the sta NaOH, acetone...
Temperature, Question 7 (13 marks) Acetone is brominated in acidic solution according to the following reaction: CH3COCH3(aq) + Br2(aq) - CH3COCH_Br(aq) + H" (aq) + Br" (aq) Student A proposed the following four-step mechanism for the decomposition of Bra: CH3COCH3 + H + CH3C(OH)CH3 ki, ki CH,C(OH)CH3 -CH:C(OH)-CH2 + H+ ka, slow CH;C(OH)=CH2 + Br2 - CH3C(OH)CH2Br* + Br k3 CH:C(OH)CH2Br* - CH3COCH2Br + H+ k4 Deduce the rate law for the above reaction by assuming a pre-equilibrium (7 marks)...
PRE-LAB QUIZ for EXPERIMENT 27 Name 1. In Experiment 27, a modified Perkin reaction is performed. The Perkin reaction is a carbonyl condensation reaction that is related to the Claisen condensation and aldol condensation. In this experiment, the reactants are benzaldehyde and 3-benzoylpropionic acid with sodium acetate and acetic anhydride as catalysts. Draw the structures of these compounds in the space below. benzaldehyde 3-benzoylpropionic acid acetic anhydride 2. The first step of the reaction is the formation of the mixed...
HClaa)+ NaOH)+NaC) H (a) C (aa)+ Na (OH ()H2+Na )+ CI Figure 2 - Reaction of hydrochloric acid with sodium hydroxide (aq) (Reaction 2) With this in mind, write the chemical reactions for each synthetic step in this experiment using the correct phase notation for each chemical species. a. The reaction of aluminum with potassium hydroxide. b. The first reaction of sulfuric acid with KA(OH)4 (a) c. The second reaction of sulfuric acid with Al(OH)3 (o)- d. The reaction to...
The acetoacetic ester synthesis is a carbonyl alkylation reaction. It is used to prepare methyl ketones from primary alkyl halides, lengthening the carbon chain by three atoms. Thus, the product can be visualized as being a "substituted acetone." The reaction consists of three steps: generation of the enolate anion followed by S2 reaction with a primary alkyl halide, ester hydrolysis under acid conditions, and decarboxylation. 1. NaOEt 2. H2O* 3. heat Br + - H₃C + CO2 + ETOH Hc...
Complete the mechanism for the reaction of butanone hydrate to produce butanone under conditinos of NaOH in water. A reversible reaction takes place, but we will just draw the arrows for formation of the carbonyl in this problem. :0: Hö: OH NaOH H2O :0: Step Step H-Ö ÖH OH : HT Two One :0H Draw the arrows for the 3-step mechanism in formation of the hydrate. (This would not build up and be isolated, but show how it would form.)...
A student is trying to carry out an Aldol Reaction. Indicate if the starting materials under the reaction conditions shown will produce this product. NaOH/H,O-CH,OH CH3 НО HO CH 3 ОО
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