<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>The treatment of iodonium tosylates (I) with a catalytic amount of CuCl leads to desired (Z)‐β‐(tosyloxy)alkenyl iodides (II), which are converted into tamoxifen intermediate (IV) and other trisubstituted alkenes (VII) and (X).</p> </abstract>