The product formed is a orgomercurial product as shown in the picture. Look at part (c).
Work Step by Step
The product formed is orgomercurial product as shown in the picture. Look at part (c). The mechanism is the following: 1) The arrow goes from the double bond to the Hg and back from Hg to the carbon. This electrophilic attack forms a mercurinium ion. 2) Ethanol opens the ring to give an organomercurial alcohol. It attacks on the most substituted carbon. 3) Deprotonation of the ethanol happens, leaving behind a organomercurial alcohol.