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+ Chirality
+ Biochemistry
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Muhammad Sohail Sabir

Isopropyl and Butyl Groups - Relative Priorities

Azn Faruqi  Follow

If two groups have the same first atom, then compare the second atom from the chiral center. If there are multiple second atoms, then compare them in order of atomic number.

from http://www.chem.sc.edu/faculty/shimizu/333/Chem_333/5a.vii.html, step 1, part 2

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Carsten Junge  Follow

Comparing IsoPropyl and n-Butyl

  • On first position both have C.
  • On second position IsoPropyl has two C's whereas n-Butyl has only one C.
  • Thus IsoPropyl has higher priority and we do not see the further chain.

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Josefina Robertson  Follow
Thank you. I referred again to a text (a different one) and it became more clear to me that we first compare the ones attached to the carbon one away from the chiarlity center, rather than simply span outward.More
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