反应详情

Compound 3 was prepared in a yield of 89% by the basic process from 5.0 mmol 4-chloroaniline, 5.5 mmol ethylglyoxalate solution (50% toluene), 15.0 mmol cyclopentadiene and 5.0 mmol trifluoroacetic acid in 30.0 ml acetonitrile.