反应详情

A solution of the compound (0.10 g, 0.25 mmol) of Example 21, 1,3-cyclohexanediol (0.44 g, 3.8 mmol) and zinc cluster catalyst (Zn4(OCOCF3)6O) (0.018 g, 0.019 mmol) in N,N-dimethylacetamide (1.0 mL) was stirred at 130° C. for 1.5 days. Cooled to ambient temperature, the precipitate was removed by filtration. The filtrate was purified by preparative HPLC to afford the titled compound as solid (0.010 g, y. 13%).

1. customthe precipitate was removed by filtration
2. customThe filtrate was purified by preparative HPLC