Question #a6b1a

1 Answer
Feb 22, 2018

Here's one possibility.

Explanation:

#"H"_3"C-CH"_3 stackrelcolor(blue)("Br"_2, hnucolor(white)(mm))(→) "H"_3"C-CH"_2"Br" stackrelcolor(blue)("alc. KOH"color(white)(mm))(→) "H"_2"C=CH"_2 stackrelcolor(blue)(1. "O"_3; 2. "Zn"color(white)(mm))(→) "H"_2"C=O"" #