“…The following substituted /3-chlorophenyIacetylenes have been prepared in this way: p-methyl- (423,424), 2,5-dimethyl- (423,424), p-ethyl- (425), p-isopropyl-TABLE 13 ,ß-Dichlorostyrenes from phenacyl chlorides 425), 2-methyl-5-isopropyl-( 425), p-methoxy- (422) in 10 per cent yield (423), 2-methyl-5-methoxy-( 423), and 2,4-6-triethyl- (423). When a, /3-dichlorostyrenes are treated with sodium in ether, phenylacetylenes are produced.…”