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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: Matter and Change
Chemistry: Matter and Change
1st Edition
ISBN:9780078746376
Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Chapter15: Energy And Chemical Change
Section: Chapter Questions
Problem 80A
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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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