反应详情

A procedure similar to that described in Example 2 was repeated, except that 2.50 g of 5-{4-[2-(7-aza-indol-1-yl)ethoxy]benzyl}-3-triphenylmethylthiazolidine-2,4-dione (prepared as described in Preparation 19), 50 ml of methylene chloride and 3.1 ml of trifluoroacetic acid were used, to give 0.84 g of the title compound, melting at 200.0°-202.4° C.