Results@-Bromostyrene with Acetone Enolate Ion. A solution of 0-bromostyrene (1) and potassium acetone enolate in liquid ammonia in a Pyrex flask was exposed to" 350-nm" radiation for 5 h. The main products were one of straightforward substitution, 2, in 48% yield, and a tautomer thereof, 3, in 34% yield. There was also 7% of styrene and 3% of unreacted 1.