# How many signals should be observed in the ""^13C{""^1H} "NMR spectrum" of "ethyl acetate"?

Mar 24, 2017

Of $\text{ethyl acetate...............?}$
For ${\text{H"_3"CCH"_2"O(O=)CCH}}_{3}$ there should be 4 singlets in the ""^13"C"{""^1"H"} $\text{NMR}$ spectrum, and four only. It might be hard to see the carbonyl carbon, but this will occur well downfield (and in the spectrum pictured, the carbonyl carbon is quite distinguishable; of course with reagents like this, which are available in quantity, you make a solution of almost 100% sample with a drop or 2 of lock solvent).
In the $\text{DEPT-135 sequence}$, the $\text{methylene carbon}$ of the ethyl residue should be negative.
Why does the ${d}_{1} - \text{chloroform}$ signal appear as a triplet?