Although 3 was found to react with Me3SiCl upon heating to 60 °C, no crystals suitable for XRD studies could be obtained to unambiguously assign the nature of the products formed. When the reaction was performed using MeI as electrophile (Scheme 3), no reaction occurred at room temperature but slow conversion of 3 was observed in toluene-d8 upon heating the reaction mixture at 80 °C for 3 days.