Background The goal of this experiment was to synthesize benzoic acid using a Grignard reagent while simultaneously working safely with diethyl ether and conducting tests under anhydrous circumstances. In this experiment, we will react magnesium with bromobenzene, to form phenyl magnesium bromide (the Grignard reagent). We will then react the Grignard reagent with dry ice (solid CO2). After acidification and work-up, benzoic acid will be isolated. Compound MM (g/mol) density (g/mL) bp (oC) mp (°C) bromobenzene 157 1.49 156 -30.6 magnesium 24.3 benzoic acid 122 122.4 diethyl ether 74.1 0.706 35 1. Grignard Reaction Question a. Based on the final data what is the percentage yield and melting point range? b.In your own words, write the procedure for the Grignard synthesis of triphenylmethanol. Include the chemicals, order of addition, and the mechanism of the reaction with diagrams.
Background The goal of this experiment was to synthesize benzoic acid using a Grignard reagent while simultaneously working safely with diethyl ether and conducting tests under anhydrous circumstances. In this experiment, we will react magnesium with bromobenzene, to form phenyl magnesium bromide (the Grignard reagent). We will then react the Grignard reagent with dry ice (solid CO2). After acidification and work-up, benzoic acid will be isolated. Compound MM (g/mol) density (g/mL) bp (oC) mp (°C) bromobenzene 157 1.49 156 -30.6 magnesium 24.3 benzoic acid 122 122.4 diethyl ether 74.1 0.706 35 1. Grignard Reaction Question a. Based on the final data what is the percentage yield and melting point range? b.In your own words, write the procedure for the Grignard synthesis of triphenylmethanol. Include the chemicals, order of addition, and the mechanism of the reaction with diagrams.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Background
The goal of this experiment was to synthesize benzoic acid using a Grignard reagent while simultaneously working safely with diethyl ether and conducting tests under anhydrous circumstances. In this experiment, we will react magnesium with bromobenzene, to form phenyl magnesium bromide (the Grignard reagent). We will then react the Grignard reagent with dry ice (solid CO2). After acidification and work-up, benzoic acid will be isolated.
|
Compound |
MM (g/mol) |
density (g/mL) |
bp (oC) |
mp (°C) |
|
bromobenzene |
157 |
1.49 |
156 |
-30.6 |
|
magnesium |
24.3 |
|||
|
benzoic acid |
122 |
122.4 |
||
|
diethyl ether |
74.1 |
0.706 |
35 |
1. Grignard Reaction Question
a. Based on the final data what is the percentage yield and melting point range?b.In your own words, write the procedure for the Grignard synthesis of triphenylmethanol. Include the chemicals, order of addition, and the mechanism of the reaction with diagrams.
Transcribed Image Text:Starting Material Weight (g)
Magnesium metal
1.125
Product
Weight (g) m.p. (°C)
Benzoic Acid
0.615
119-121
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