Question #12ada

1 Answer
Dec 23, 2017

The #"OH"# group gets priority.

Explanation:

Thus, you start numbering the carbon chain from the end closest to the #"OH"# group.

The correct name of

#stackrelcolor(blue)(5)("C")"H"_3stackrelcolor(blue)(4)("C")"H="stackrelcolor(blue)(3)("C")"H"stackrelcolor(blue)(2)("C")"H(OH)"stackrelcolor(blue)(1)("C")"H"_3#

is pent-3-en-2-ol, not 4-hydroxypent-2-ene.