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DR ANTHONY MELVIN CRASTO, WORLDDRUGTRACKER

ETHYL PROPIONATE NMR, carbonyl is dad and oxygen mom, a methyl gets more attention

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Jul 242014
 

Dedicated to all moms

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.

IR

IR spectrum

 

 

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.

 

 

NMR spectrum

 Structure answer

Structure answerThis is the structure. See if you can assign the peaks on your own.

NMR answer

NMR answerC 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

 

 

 

WHEN THERE IS ONE METHYL

 

 

 

WHEN THERE ONE CH2 SHORT 

 

WHEN MOM HAS ONE MORE CH2

PROPYL PROPIONATE, try this on your own

Propyl propanoate.png

1H NMR

image of Propyl proprionate

 

 

image of Propyl proprionate

 

13C NMR

image of Propyl proprionate

 

APT

image of Propyl proprionate

 

COSY

image of Propyl proprionate

WILL PASTE INTERPRETATION AFTER ONE WEEK……………….

 

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