Table 6.
| |||||
---|---|---|---|---|---|
entry | substrate | product | yield (%) | dr | ee (%) |
1b |
23a |
87 | >20:1 | 92 | |
2 |
23b |
84 | >20:1 | 94 | |
3 |
23c |
80 | >20:1 | 94 | |
4 |
23d |
98 | >20:1 | 95 | |
5 |
23e |
96 | >20:1 | 94 | |
6 |
23f |
100 | >20:1 | 95 | |
7 |
23g |
90 | > 20:1 | 97 | |
8 |
23h |
63 | > 20:1 | 95 | |
9 |
23i |
82 | > 20:1 | 94 | |
10 |
23j |
84 | > 20:1 | 94 |
All reactions were performed at 0.2M in toluene with 5% Pd(dba)2, 10% ligand L38, 1.5 equiv 17 and stirred for 3h; yields were combined isolated yields; ee’s were determined by HPLC with a chiral stationary phase column.
Reaction performed at 50 °C.