Table 2.
Entry |
Enone (1) |
Product (7) |
Yield (%)* |
ee (%)† |
||
1 | 1a | 7a | 56 | 96 | ||
2‡ | 1a | ent-7a | 52 | 95 | ||
3 | 1b | 7b | 48 (37)§ | 98 (98)§ | ||
4 | 1d | 7d | 50 (50)§ | 97 (97)§ | ||
5 | 1e | 7e | 57 | 99 | ||
6 | 1f | 7f | 61 | 99 | ||
7‡ | 1f | ent-7f | 69 | 99 | ||
8 | 1g | 7g | 42 | 94 | ||
9 | 1h | 7h | 52 | 97 |
*Yields of isolated products.
†Determined by chiral stationary phase HPLC.
‡The quasi-enantiomer of the catalyst was used (2b, see Scheme 5).
§Results for the sequence performed in two separate steps.