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# Isomerism watch

1. The molecular formula of Q is C4H7NO. Draw the structure of the isomer of Q
which shows geometrical isomerism and is formed by the reaction of ammonia with
an acyl chloride.

Hi, can someone help me on this question please? I know the mechanism for ammonia and acyl chloride but i'm confused on whether acyl chloride will have one carbon or 4 carbon to get the same molecular formula?

There was a diagram on this question, i wasnt able to add a picture but it's on the physics and maths tutor, aqa,nomenclature& isomerism and carbony group questions by topic bit. It's question 1,part b.
Thankyou
2. Acyl chloride will have a C=C double bond between the second and third carbon atoms, then just use this acyl chloride in the ammonia mechanism and you should be fine
3. And yeah the acyl chloride has 4 carbon atoms
4. (Original post by Daniel100499)
Acyl chloride will have a C=C double bond between the second and third carbon atoms, then just use this acyl chloride in the ammonia mechanism and you should be fine
i dont undertsand why acyl chlroide will have a double bond between 2nd and 3rd carbon?
5. (Original post by elvss567)
i dont undertsand why acyl chlroide will have a double bond between 2nd and 3rd carbon?
It shows geometrical isomerism, therefore it needs a double bond in there somewhere, if it was on the first carbon it wouldn’t show E/Z isomerism, and if it was on the fourth carbon, that carbon would have too many bonds, therefore it’s on the 2nd and 3rd carbon
6. (Original post by Daniel100499)
It shows geometrical isomerism, therefore it needs a double bond in there somewhere, if it was on the first carbon it wouldn’t show E/Z isomerism, and if it was on the fourth carbon, that carbon would have too many bonds, therefore it’s on the 2nd and 3rd carbon
ohhh thankyou!

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