Podcast
Questions and Answers
What is the product formed from the bromination of furan in the presence of alcohol?
What is the product formed from the bromination of furan in the presence of alcohol?
- Mercuration product
- Oxidation product
- Pyrrole
- 2,5-dialkoxy-2, 5-dihydrofurans (correct)
Why can furan behave as a diene in Diels-Alder reactions?
Why can furan behave as a diene in Diels-Alder reactions?
- Due to the addition of sulfur compounds
- Due to the high electronegativity of the oxygen atom (correct)
- Due to the presence of double bonds in the ring
- Due to the presence of nitrogen atoms
What is the catalyst used in the industrial synthesis of pyrrole from furans?
What is the catalyst used in the industrial synthesis of pyrrole from furans?
- Alumina (correct)
- Raney Ni
- Nickel
- Sulfuric acid
What type of reaction involves replacement of hydrogen or carbon dioxide from an acid in the mercuration of furan?
What type of reaction involves replacement of hydrogen or carbon dioxide from an acid in the mercuration of furan?
What does the formylation of furan involve?
What does the formylation of furan involve?
What is Raney Ni composed mostly of?
What is Raney Ni composed mostly of?
What is the strongest base required for the synthesis of furan from carbohydrates?
What is the strongest base required for the synthesis of furan from carbohydrates?
In the synthesis of furan from carbohydrates, what is the first step?
In the synthesis of furan from carbohydrates, what is the first step?
Which statement about the properties of furan is correct?
Which statement about the properties of furan is correct?
In electrophilic substitution reactions of furan, which position is primarily substituted?
In electrophilic substitution reactions of furan, which position is primarily substituted?
What is the reason given for furan undergoing electrophilic substitution at the 2-position?
What is the reason given for furan undergoing electrophilic substitution at the 2-position?
What is the yield of furan reported by Wilson when furoic acid is heated to 200°C without a catalyst?
What is the yield of furan reported by Wilson when furoic acid is heated to 200°C without a catalyst?
What is the key factor that contributes to the aromaticity of furan?
What is the key factor that contributes to the aromaticity of furan?
Which of the following is NOT a method for the industrial synthesis of furan?
Which of the following is NOT a method for the industrial synthesis of furan?
In the Paal-Knorr synthesis of furan, what type of reaction occurs?
In the Paal-Knorr synthesis of furan, what type of reaction occurs?
What is the role of the base in the Feist-Benary synthesis of furan?
What is the role of the base in the Feist-Benary synthesis of furan?
Which of the following statements about furan is correct?
Which of the following statements about furan is correct?
What is the primary medicinal use of furan derivatives?
What is the primary medicinal use of furan derivatives?
Which of the following statements about the aromaticity of furan is correct?
Which of the following statements about the aromaticity of furan is correct?
In the Paal-Knorr synthesis of furan, what type of reaction occurs?
In the Paal-Knorr synthesis of furan, what type of reaction occurs?
Which of the following is the correct mechanism for the Feist-Benary synthesis of furan?
Which of the following is the correct mechanism for the Feist-Benary synthesis of furan?
Which of the following reactions is NOT a method for the industrial synthesis of furan?
Which of the following reactions is NOT a method for the industrial synthesis of furan?
In electrophilic substitution reactions of furan, which position is primarily substituted?
In electrophilic substitution reactions of furan, which position is primarily substituted?
Which of the following statements about the properties of furan is correct?
Which of the following statements about the properties of furan is correct?
What is the primary reason for the preference of electrophilic substitution at the 2-position over the 3-position in furan?
What is the primary reason for the preference of electrophilic substitution at the 2-position over the 3-position in furan?
What is the primary reason for furan's solubility in most organic solvents but insolubility in ether?
What is the primary reason for furan's solubility in most organic solvents but insolubility in ether?
In the synthesis of furan from carbohydrates, what is the role of the sulfuric acid in the first step?
In the synthesis of furan from carbohydrates, what is the role of the sulfuric acid in the first step?
Which of the following statements about the properties of furan is incorrect?
Which of the following statements about the properties of furan is incorrect?
In the reaction reported by Wilson, where a 78% yield of furan was obtained from furoic acid at 200°C without a catalyst, what was the likely mechanism?
In the reaction reported by Wilson, where a 78% yield of furan was obtained from furoic acid at 200°C without a catalyst, what was the likely mechanism?
Which of the following statements best explains why furan undergoes electrophilic substitution reactions primarily at the 2-position?
Which of the following statements best explains why furan undergoes electrophilic substitution reactions primarily at the 2-position?
What is the key factor that enables furan to undergo Diels-Alder cycloaddition reactions?
What is the key factor that enables furan to undergo Diels-Alder cycloaddition reactions?
In the bromination of furan in the presence of alcohol, what is the mechanism for the formation of 2,5-dialkoxy-2,5-dihydrofurans?
In the bromination of furan in the presence of alcohol, what is the mechanism for the formation of 2,5-dialkoxy-2,5-dihydrofurans?
Which of the following is the primary reason for using Raney Ni as a reducing agent in the reduction of furan derivatives?
Which of the following is the primary reason for using Raney Ni as a reducing agent in the reduction of furan derivatives?
In the industrial synthesis of pyrrole from furans, what is the primary role of the alumina catalyst?
In the industrial synthesis of pyrrole from furans, what is the primary role of the alumina catalyst?
Which of the following statements best describes the Gattermann-Koch formylation of furan?
Which of the following statements best describes the Gattermann-Koch formylation of furan?
Which of the following reactions is NOT a common method for the synthesis of furan derivatives?
Which of the following reactions is NOT a common method for the synthesis of furan derivatives?
