反应详情

Following a procedure similar to that described in Example 1 but employing 3.1 g of 5-(dimethylamino)-2-[4-(dimethylamino)benzoyl]benzoic acid and 3.0 g of 4-(dimethylamino)-N-phenylaniline there was obtained 3.8 g of 6-(dimethylamino)-3-[4-(dimethylamino)phenyl]-3-{[4-(dimethylamino)phenyl]phenylamino}phthalide, m.p. 163°-164° C. A toluene solution of the product contacted with acidic clay or phenolic resin developed a brown-colored image which changed to green on clay after fluorescent light exposure.