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- Dec 12, 2013
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I have always been really good at stereochemistry but suddenly I'm getting confused on some priority stuff. I'll explain this as best as I can but if it doesn't make sense I'll post a picture or something.
OK, so when you're figuring out priority for a chiral center connected to chains do you take the hydrogens into consideration?? For example:
if you have a chiral carbon with the 4 substituents being a phenyl ring, an OH, a hydrogen and then CH2NCH3H2. I Obviously understand that OH is priority #1 and the Hydrogen is #4. When looking at the other two, though I'm starting to confuse myself and overthink everything!
My thought process is this: both the phenyl group and the R group are attached by a carbon so lets go onto the next atom, the phenyl group is double bonded to another C while the R group is attached to two hydrogens so the phenyl group must be next priority. The question I'm currently looking at, though says otherwise. Do you not "count" hydrogens when you're looking at the next atom down on the chain??
So sorry if this is confusing!
OK, so when you're figuring out priority for a chiral center connected to chains do you take the hydrogens into consideration?? For example:
if you have a chiral carbon with the 4 substituents being a phenyl ring, an OH, a hydrogen and then CH2NCH3H2. I Obviously understand that OH is priority #1 and the Hydrogen is #4. When looking at the other two, though I'm starting to confuse myself and overthink everything!
My thought process is this: both the phenyl group and the R group are attached by a carbon so lets go onto the next atom, the phenyl group is double bonded to another C while the R group is attached to two hydrogens so the phenyl group must be next priority. The question I'm currently looking at, though says otherwise. Do you not "count" hydrogens when you're looking at the next atom down on the chain??
So sorry if this is confusing!
