反应详情

Intermediate (a) (27.5 g, 0.101 mol) was slowly added over five minutes to refluxing Dowtherm A (200 ml). After an additional five minutes at reflux, the mixture was allow to cool to room temperature then ether (200 ml) was added. The product was filtered off, thoroughly washed with ether then air dried to afford the product as a gold coloured solid (16.2 g, 94%).

1. temperatureAfter an additional five minutes at reflux
2. filtrationThe product was filtered off
3. washthoroughly washed with ether
4. customair dried