Reaction of 2-(trimethylsilylmethyl)benzothiazole (10) with the ether (1)

Similarly, a benzothazole derivative (10) allowed to react with 1 gave the corresponding adduct (11) and methylated compound (12) in 40 and 8% yields, respectively. Stirring the reaction mixture for 3 h at room temp. prior to reflux increased the yields of both products (54 and 18%), as shown in Table 3.