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General procedure A mixture of 4-hydroxycoumarin (1 mmol), aromatic aldehyde (1 mmol), methyl carbamate (1.5 mmol) and p-TSA (0.1 mmol) was suspended in water (10 mL) and stirred at 80 °C for 3 h. The reaction was monitored by TLC. After completion, the reaction mixture was allowed to cool to room temperature. The solid was collected by filtration and washed with water (15 mL) to give a pure product.

General procedure A mixture of 4-hydroxycoumarin (1 mmol), aromatic aldehyde (1 mmol), methyl carbamate (1.5 mmol) and p-TSA (0.1 mmol) was suspended in water (10 mL) and stirred at 80 °C for 3 h. The reaction was monitored by TLC. After completion, the reaction mixture was allowed to cool to room temperature. The solid was collected by filtration and washed with water (15 mL) to give a pure product.

Chemistry: The Molecular Science
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter16: Thermodynamics: Directionality Of Chemical Reactions
Section: Chapter Questions
Problem 110QRT: Reword the statement in Question 109 so that it is always true. Criticize this statement: Provided...
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Based on the general procedure given and reaction scheme, which is the limiting reagent and what is the equivalence?

1 OH + Ar 2 H H₂N 3 p-TSA OMe H₂O, 80 °C, 3h O Ar H
Transcribed Image Text:1 OH + Ar 2 H H₂N 3 p-TSA OMe H₂O, 80 °C, 3h O Ar H
General procedure A mixture of 4-hydroxycoumarin (1 mmol), aromatic aldehyde (1 mmol), methyl carbamate (1.5 mmol) and p-TSA (0.1 mmol) was suspended in water (10 mL) and stirred at 80 °C for 3 h. The reaction was monitored by TLC. After completion, the reaction mixture was allowed to cool to room temperature. The solid was collected by filtration and washed with water (15 mL) to give a pure product.
Transcribed Image Text:General procedure A mixture of 4-hydroxycoumarin (1 mmol), aromatic aldehyde (1 mmol), methyl carbamate (1.5 mmol) and p-TSA (0.1 mmol) was suspended in water (10 mL) and stirred at 80 °C for 3 h. The reaction was monitored by TLC. After completion, the reaction mixture was allowed to cool to room temperature. The solid was collected by filtration and washed with water (15 mL) to give a pure product.
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