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Given the following IR spectroscopy figures for Knoevenagel Condensation ; seperatley for each figure please explain each peak(i.e.,bonding/absorption etc.) and significance & reason for such peaks. Need ASAP, thanks! **Will Rate**

Given the following IR spectroscopy figures for Knoevenagel Condensation ; seperatley for each figure please explain each peak(i.e.,bonding/absorption etc.) and significance & reason for such peaks. Need ASAP, thanks! **Will Rate**

Chemistry
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Given the following IR spectroscopy figures for Knoevenagel Condensation ; seperatley for each figure please explain each peak(i.e.,bonding/absorption etc.) and significance & reason for such peaks. Need ASAP, thanks! **Will Rate**

Title: A One-Pot Tandem Reaction In this chemical reaction, salicylaldehyde and diethyl malonate are combined. The reaction involves the presence of pyrrolidine as a catalyst, and it takes place in the presence of acetic acid (CH₃CO₂H) and ethanol (EtOH). The reaction conditions are at a temperature of 78°C for 2 hours. The intermediate product, which is not isolated, features an ethoxycarbonyl group (CO₂Et) attached to a benzene ring. The final product is a bicyclic compound with a lactone structure, containing an ethoxycarbonyl group. This schematic demonstrates a one-pot tandem reaction, which integrates multiple reaction steps without isolating intermediates.
Transcribed Image Text:Title: A One-Pot Tandem Reaction In this chemical reaction, salicylaldehyde and diethyl malonate are combined. The reaction involves the presence of pyrrolidine as a catalyst, and it takes place in the presence of acetic acid (CH₃CO₂H) and ethanol (EtOH). The reaction conditions are at a temperature of 78°C for 2 hours. The intermediate product, which is not isolated, features an ethoxycarbonyl group (CO₂Et) attached to a benzene ring. The final product is a bicyclic compound with a lactone structure, containing an ethoxycarbonyl group. This schematic demonstrates a one-pot tandem reaction, which integrates multiple reaction steps without isolating intermediates.
### Infrared Spectrum Analysis **Date and Time of Analysis:** - Tue Oct 24 15:00:55 2017 (GMT-04:00) **Graph Description:** - The graph displays an infrared spectrum with Transmittance (%) on the Y-axis and Wavenumbers (cm⁻¹) on the X-axis. - The spectrum line is red and exhibits various peaks at specific wavenumbers, indicating the presence of different functional groups within the sample. **Detailed Peak Information:** - **2976.52 cm⁻¹** - **1833.46 cm⁻¹** - **1765.89 cm⁻¹** - **1465.07 cm⁻¹** - **1290.93 cm⁻¹** - **1258.73 cm⁻¹** - **1233.69 cm⁻¹** - **1115.32 cm⁻¹** - **1075.24 cm⁻¹** - **986.07 cm⁻¹** - **900.55 cm⁻¹** - **929.74 cm⁻¹** - **798.53 cm⁻¹** - **749.09 cm⁻¹** - **702.68 cm⁻¹** - **616.90 cm⁻¹** - **635.51 cm⁻¹** - **544.25 cm⁻¹** - **530.31 cm⁻¹** - **483.28 cm⁻¹** - **405.75 cm⁻¹** **Peak Analysis (Selected Peaks):** 1. **Position: 405.75 cm⁻¹** - Intensity: 60.548 2. **Position: 439.28 cm⁻¹** - Intensity: 83.778 3. **Position: 530.31 cm⁻¹** - Intensity: 63.428 --- **Technical Details:** - **Spectrum Acquisition:** - Spectrum Date and Time: Tue Oct 24 15:00:55 2017 (GMT-04:00) - Region: 4000.00 - 400.00 cm⁻¹ - Absolute Threshold: 92.781 - Sensitivity: 22 **Notes:** - The infrared spectrum is used to identify molecular vibrations and chemical bonding information. The
Transcribed Image Text:### Infrared Spectrum Analysis **Date and Time of Analysis:** - Tue Oct 24 15:00:55 2017 (GMT-04:00) **Graph Description:** - The graph displays an infrared spectrum with Transmittance (%) on the Y-axis and Wavenumbers (cm⁻¹) on the X-axis. - The spectrum line is red and exhibits various peaks at specific wavenumbers, indicating the presence of different functional groups within the sample. **Detailed Peak Information:** - **2976.52 cm⁻¹** - **1833.46 cm⁻¹** - **1765.89 cm⁻¹** - **1465.07 cm⁻¹** - **1290.93 cm⁻¹** - **1258.73 cm⁻¹** - **1233.69 cm⁻¹** - **1115.32 cm⁻¹** - **1075.24 cm⁻¹** - **986.07 cm⁻¹** - **900.55 cm⁻¹** - **929.74 cm⁻¹** - **798.53 cm⁻¹** - **749.09 cm⁻¹** - **702.68 cm⁻¹** - **616.90 cm⁻¹** - **635.51 cm⁻¹** - **544.25 cm⁻¹** - **530.31 cm⁻¹** - **483.28 cm⁻¹** - **405.75 cm⁻¹** **Peak Analysis (Selected Peaks):** 1. **Position: 405.75 cm⁻¹** - Intensity: 60.548 2. **Position: 439.28 cm⁻¹** - Intensity: 83.778 3. **Position: 530.31 cm⁻¹** - Intensity: 63.428 --- **Technical Details:** - **Spectrum Acquisition:** - Spectrum Date and Time: Tue Oct 24 15:00:55 2017 (GMT-04:00) - Region: 4000.00 - 400.00 cm⁻¹ - Absolute Threshold: 92.781 - Sensitivity: 22 **Notes:** - The infrared spectrum is used to identify molecular vibrations and chemical bonding information. The
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Weak peak at around 3040 cm^-1 corresponding to aromatic C-H stretching vibration.

Medium peak at 2976 cm^-1 corresponding to the C-H stretching vibration of CH3 and CH2 groups.

Medium peak at 1833 cm^-1 corresponding to ring ester carbonyl stretching vibration.

Strong peak at 1766 cm^-1 corresponding to ester C=O stretching vibration.

 

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