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stereoisomer question

I'm not sure how to answer this question


How many stereoisomers are there of CH3CH=CHCH(OH)CH2CH=CH2?



do you do it by finding how many chiral centres there are and multiplying by 2?

how do you find the chiral carbons? do carbons attached by double bonds count? and do you look at the directly neighbouring C atoms or whole groups (ie. a CH3 vs a CH2 group) either side?
Original post by A*my
I'm not sure how to answer this question


How many stereoisomers are there of CH3CH=CHCH(OH)CH2CH=CH2?



do you do it by finding how many chiral centres there are and multiplying by 2?

how do you find the chiral carbons? do carbons attached by double bonds count? and do you look at the directly neighbouring C atoms or whole groups (ie. a CH3 vs a CH2 group) either side?


There are both cis-trans isomers and optical isomers.
Original post by A*my
I'm not sure how to answer this question


How many stereoisomers are there of CH3CH=CHCH(OH)CH2CH=CH2?



do you do it by finding how many chiral centres there are and multiplying by 2?

how do you find the chiral carbons? do carbons attached by double bonds count? and do you look at the directly neighbouring C atoms or whole groups (ie. a CH3 vs a CH2 group) either side?


You are thinking too complicate. In general it is like charco said:
this isomer exists as cis-isomer and trans-isomer, plus as optical isomers.

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