Hello, for my organic lab we did this reaction and I made an IR spectrum of my f
ID: 485641 • Letter: H
Question
Hello, for my organic lab we did this reaction and I made an IR spectrum of my final product.
can someon please examine it and tell me if I made the correct product, and if there are any odd peaks I need to talk about in my final report? Thank you
OPC (Eq. maleic anhydride anthracene adduct (dienophile) (diene) The reaction is carried out in xylene, which is actually a mixture of the three dimethylbenzenes, for three reasons. First, the 140 °C boiling point provides a good reaction temperature. Second, the xylene mixture does not freeze when it is cooled in ice water. Third, the reactants are more soluble in xylene than is the product, which crystallizes The product is a relatively stable anhydride. Although anhydrides re- act with water in air, this one reacts slowly and is easily isolated and char- acterized before much hydrolysis occurs.There are several possible ways to name the product, but 9,10dihydroanthracene-9,10-o,A-succinic anhy- ride is probably the simplest.Explanation / Answer
The IR spectra (clean) of your compound indicates that the compound is in very pure state.The IR spectra is of course for the adduct. Because, 1) the peaks at 2984 cm-1 is definitely for aromatic -CH strtching .2) the anhydride group will contains two C=O stretching frequencies. In your provided spectrum has 1862 cm-1 and 1770 cm-1 and this is for anhydride group.
It is not for only maelic anhydride as it does not contain any aromatic H atoms. This is also not a mixture.
Hence this is definitely for the adduct.
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