反应详情

A mixture of 230d (1.9 g, 3.97 mmol) and trifluoroacetic acid (4 mL) was stirred at room temperature for 1 h. It was then concentrated under reduced pressure to afford crude 230e (1.45 g, 97%), which was used in the next step without further purification. MS: [M+H]+ 381.2.

1. concentrationIt was then concentrated under reduced pressure