0
$\begingroup$

Should one write 4-hydroxypentan-2-one or 4-hydroxy-2-pentanone? It has been seen that both have been used frequently.

$\endgroup$
1
  • $\begingroup$ Check PubChem. As I understand it that site uses a computer program LexiChem for naming which is setup to follow all the current rules. $\endgroup$
    – MaxW
    Commented May 12, 2020 at 18:28

1 Answer 1

4
$\begingroup$

The IUPAC recommendations on this matter have been changed.

According to the 1979 recommendations, the correct name was still 4-hydroxy-2-pentanone.

According to the 1993 recommendations, however, locants were placed immediately before the part of the name to which they relate. This rule is still included in the 2013 version. Therefore, the correct name is now 4-hydroxypentan-2-one.

$\endgroup$
0

Not the answer you're looking for? Browse other questions tagged or ask your own question.