Who discovered the Biginelli reaction and in which year?
Biginelli Reaction

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Biology, Chemistry, Physics, Science
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11th Grade - University
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Hard
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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Marie Curie in 1911
Isaac Newton in 1687
Albert Einstein in 1905
Pietro Biginelli in 1891
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main product of the Biginelli reaction?
Dihydropyrimidinone
Benzene
Methane
Ethanol
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the Biginelli reaction product, which positions are hydrogen atoms added to?
Positions 1 and 2
Positions 3 and 4
Positions 7 and 8
Positions 5 and 6
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in the proposed mechanism of the Biginelli reaction?
Formation of a hemiaminal
Formation of a carbocation
Formation of a radical
Formation of a ketone
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which intermediate is formed during the Biginelli reaction mechanism?
Radical
Carbocation
Ketone
Carbomoil iminium ion
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of catalyst did Professor Liu Xu Gong use in his research on the Biginelli reaction?
Nitric acid
Chiral phosphoric acid
Sulfuric acid
Hydrochloric acid
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the enantiomeric excess achieved by Professor Liu Xu Gong in his study of the Biginelli reaction?
75%
50%
97%
100%
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