Question 2. Select a structure from those below; for an...

Question 2. Select a structure from those below; for an unknown compound with molecular formula C8H10O2 with the following spectra (20 points total). 13C NMR Signals at: 55, 65, and 4 signals (2 large and 2 smaller), between 114 and 165 ppm. Infrared Spectrum: 3100-3500 cm-1 (broad, strong); 2850-3080 cm-1 series of peaks The 1H NMR 1H broad singlet at ?3.2 3H singlet at ?3.8 2H singlet at ?4.6 2H doublet at ?6.9 2H doublet at ?7.0 2A. What group does the 3H singlet at ?3.8 in the 1H Spectrum signify? (4 points)

Transcript

0:00 Hello everyone.

00:01 So according to the question, we are going to be a finding over here, which is going to be a following.

00:07 Spectra is going to be over here the answer.

00:10 So moving ahead, i would like to write it over here.

00:13 The ir spectrum, the solution part here is going to be ir spectrum.

00:22 It's going to be having a kind of a pick, which is a broad and we can see the strong one.

00:29 And it is having a round.

00:30 What will be the presence of the centimeter i can write it it is going to be around 3100 centimeter inverse to 3500 centimeter inverse and we are going to be a suggesting the presence of what double bond so i can write it over here suggesting the double bond it would be like in this way a 3100 to 3150 centimeter inverse and oh which when we are going to see it is having three four zero zero centimeter inverse to three five zero centimeter inverse and that is what we can say it is having a broad big width it is having and when we are seeing the one and m r it's going to be suggested i would like to write it over that part also one h nmr is going to be suggested over here the symmetric pig i would like to write it it's going to be suggested over here which kind of a big symmetric pick of what two edge i can say and the two edge is what actually that is my aromatic region i can say and that means a substitution it's going to be a para substitution so i would like to write it substitution is in this case is para substituted so i would like to draw that particular stock is going to be like this way.

02:07 Here it will be having double bond, double bond, double bond, double bond.

02:13 And this will be having o h over here.

02:16 And here it's going to be attached with och3.

02:19 This is c8h10o2...

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