Table 1.
entry | product | yield | entry | product | yield |
---|---|---|---|---|---|
1 | 92%b | 7 | 95% | ||
2 | 78% | 8 | 82% | ||
3 | 79% | 9 | 44% | ||
4 | 89% | 10 | 62% | ||
5 | 68% c | 11 | 40% | ||
6 | 70% d | 12 | 51% |
See supporting information for details on conditions. Yields refer to isolated material except as noted
Yield determined by 1H NMR
Yield is for the major isomer
Isolated as a 92:8 mixture.