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VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Chemistry => Topic started by: a weaponized ikea chair on June 29, 2022, 12:57:56 pm

Title: Is the whole chain looked at when determining chiral centres?
Post by: a weaponized ikea chair on June 29, 2022, 12:57:56 pm

So a chiral centre is "a carbon that is attached to four different groups". But does this group include the whole chain, or just the adjacent carbon(s)?

For instance, for glucose, shown attached, would carbon 3 not be considered a chiral centre because it is bonded to two CHOH groups, or a chiral centre because the rest of the whole compound is different, C4-C6 as one group and C1-C2 as another?

Thanks.

Title: Re: Is the whole chain looked at when determining chiral centres?
Post by: Billuminati on June 29, 2022, 01:49:45 pm

Quote from: a weaponized ikea chair on June 29, 2022, 12:57:56 pm

So a chiral centre is "a carbon that is attached to four different groups". But does this group include the whole chain, or just the adjacent carbon(s)?

For instance, for glucose, shown attached, would carbon 3 not be considered a chiral centre because it is bonded to two CHOH groups, or a chiral centre because the rest of the whole compound is different, C4-C6 as one group and C1-C2 as another?

Thanks.

You have to look at the whole chain. C3 as you have indicated is indeed a stereogenic centre