Having demonstrated the validity of our design plan with alkenes, we extended this methodology to the β-chloroacylation of alkynes. The wellknown Friedel Crafts acylation of alkynes with acid chlorides and Ircatalyzed addition of acid chlorides to alkynes to access β-chlorovinyl ketones generally proceeds with complete Z-selectivity (Fig. ). Recently, the Oh group has developed the Friedel Crafts acylation of alkynes in a flow set-up to increase the E-selectivity in β-chlorovinyl ketone formation (Fig. ). However, the E-selective β-chloroacylation of alkynes in a catalytic manifold is still unprecedented.