1. NaOEt Ph3P How could use infrared spectroscopy (IR) to determine if the Witti

Question

1. NaOEt Ph3P How could use infrared spectroscopy (IR) to determine if the Wittig reaction shown has reached completion? o A The IR spectrum will show the formation of a strong absorbance at 1700 cm This corresponds to the formation of the C30 bond O B) The IR spectrum will show the formation of a new c c aromatic stretch at 1600 and 1450 cm 1 O C) The IR spectrum will show a loss of a strong absorbance at 1700 cm This loss corresponds to the loss of the c o bond. O D) IR cannot be used to determine if cinnamaldehyde has been completely converted into the product

Explanation / Answer

option C

the IR spectrum will show a loss of a strong absorbance at 1700 cm-1. this loss correspons to the lose of C=O bond.

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