How is (3-Chloro-1-propen-1-yl)benzene (CAS: 2687-12-9) typically synthesized?

(3-Chloro-1-propen-1-yl)benzene (CAS: 2687-12-9) is usually synthesized via the reaction of phenylmagnesium bromide with propionaldehyde chloride, followed by acid workup. The reaction conditions typically involve the use of a Lewis acid catalyst such as zinc chloride to improve the yield and selectivity. The process requires precise control of temperature and reagent concentration to achieve high purity.