Table 1.
Enonea | Yieldb | Product | ee |
---|---|---|---|
1
1a |
84% |
3a |
98% ee |
2
1bc,d |
46% |
3b |
97% ee |
3
1c |
92% |
3c |
93% ee |
4
1d |
95% |
3d |
92% ee |
5
1e |
89% |
3e |
85% ee |
Additions were carried out using 5 mol % (S)-3,3′-dibromobinol.
Yields are for pure isolated substances.
Addition was effected using 5 mol % (R)-3,3′-dibromobinol.
Both the starting material and the product were volatile.