Table 1.
Entry | Product | % Yield | Entry | Product | Yield (%) |
---|---|---|---|---|---|
1 | 98 | 8 | 92 | ||
2 | 93b | 9 | 96 | ||
3 | 84 | 10 | 93c | ||
4 | 95 | 11 | 84 | ||
5 | 96 | 12 | 84c | ||
6 | 92b | 13 | 96c | ||
7 | 86b | 14 | 92c |
Isolated yields, the average of at least two runs.
The reaction was carried out at 40 °C and was stirred for 2 h.
The reaction was carried out at 40 °C and was stirred for 3 h.