反应详情

Cesium carbonate (10 g) was added to an N-methylpyrrolidinone (70 ml) solution of 2-chloro-5-nitrobenzaldehyde (5.0 g) and 6-(methylsulfonyl)-3-pyridinol (5 g) obtained in Reference Example 2, and stirred at room temperature for 3 hours. Water was added, then the formed crystal was collected by filtration to obtain the entitled compound as a pale brown solid.

1. customobtained in Reference Example 2
2. filtrationthe formed crystal was collected by filtration