Table 17.
(salen)Cr+ R1 = t-Bu |
(salen)Cr+ R1 = OMe |
|||||
---|---|---|---|---|---|---|
entry | R | temp (°C) |
ee (%) | yield (%) | yield (%) | ee (%) |
1 | Ph | −30 | 87 | 85 | 98 | 65 |
2 | c-C6H11 | −20 | 93 | 71 | 76 | 85 |
3 | n-C5H11 | −40 | 83 | 86 | 85 | 62 |
4 | 2-furyl | −10 | 76 | 89 | 80 | 68 |
5 | (E)-CH=CHPh | 0 | 70 | 65 | 96 | 73 |
6 | CH2OCH2(4-C6H4-Br) | −30 | 79 | 67 | 94a | 84 |
7 | CH2O2C(2-C6H4-Cl) | −20 | 83a | 92 | 86 | 72 |
Reactions were run on 10.0 mmol scale