Look at the given molecule. How many carbons are there in the main chain? ______

Question

Look at the given molecule.

How many carbons are there in the main chain?__________carbons

Is the main chain a ring? (yes or no)

Is the main chain a single carbon next to a ring? (yes or no)

What functional group(s) besides alkane/cycloalkane are present (e.g., alcohol, haloalkane, alkene)___________,______________, and_______________.

Which functional group will get priority in the name?_______________

Will the chain be numbered left to right or right to left?_____________to______________

Is there assignable stereochemistry? (yes or no)

What is the proper IUPAC name for the molecule in question 5. Include proper spelling, formatting, and any relevant stereochemistry.

Explanation / Answer

A1) Ketone is the functional group that gets the highest priority in that structure. So, you must start counting from the C with the double-bonded oxygen. There are 7 C atoms in the main chian. A2) No, the main chian is NOT a ring. A3) No, the main is not a single carbon next to ring. A4) Functional groups present = ketone, alcohol, amine, alkene A5) Ketone A6) Rigth to left A7) Yes. There is stereochemistry about the double bond (alkene). Could be either "E" or "Z". In this case, since both big groups are opposite sides of double bond, it's "E" A8) Name of compound = (2E)-5-ethyl-6-hydroxy-3-methyl-1-(N-ethyl-N-propyl)hept-2-en-1-one Hope this helps! :-)

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