Dedicated to all moms in the worldORIGINALLY IN http://orgspectroscopyint.blogspot.in/2014/07/ethyl-propionate-nmr-carbonyl-is-dad.html
C=O group is dad
O atom is mom![]()
Carbonyl is dad and oxygen mom hence c labelled methyl has higher chemical shift and gets a little more attention
SEE BELOW
NMR IS EASY
A chemical has Formula: C5H10O2
C5H10O2
Rule 2, omit O, gives C5H10
5 – 10/2 + 1 = 1 degree of unsaturation.
Look for 1 pi bond or aliphatic ring.
Rule 2, omit O, gives C5H10
5 – 10/2 + 1 = 1 degree of unsaturation.
Look for 1 pi bond or aliphatic ring.
IR
The band at 1740 indicates a carbonyl, probably a saturated aliphatic ester. The bands at 3000-2850 indicate C-H alkane stretches. The bands in the region 1320-1000 could be due to C-O stretch, consistent with an ester.
This is the structure. See if you can assign the peaks on your own.
C has a higher chemical shift than D because it’s closer to a more electron-withdrawing functional group.Carbonyl is dad and oxygen mom, hence c has higher chemical shift and gets a little more attention in proton nmr
13 C NMR
Mass spectrum
RAMAN
WHAT HAPPENS WHEN A CHLORO IS INTRODUCED
THE INTERPRETATION IS BELOW
remember “a” labelled CH3 appears as a doublet
WHEN THERE IS ONE METHYL
WHEN THERE ONE CH2 SHORT
WHEN MOM HAS ONE MORE CH2
PROPYL PROPIONATE, try this on your own
1H NMR
see interpretation
BIGGER ONE THAN OBOVE
13C NMR
APT
COSY
WILL PASTE INTERPRETATION AFTER ONE WEEK……………….
Filed under: Uncategorized Tagged: carbonyl, chemical shift, ETHYL PROPIONATE, NMR, oxygen
