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Michael addition/lactonisation using isochalcogenourea catalysts.
|
| |||||
|---|---|---|---|---|---|
|
Entry |
Catalyst |
Yield [%] |
dr |
er |
[t 1/2] [min] |
|
1 |
O‐74 |
46 |
87:13 |
53:47 |
– |
|
2 |
S‐18 |
80 |
84:16 |
95:5 |
122 |
|
3 |
Se‐75 |
95 |
84:16 |
98:2 |
11 |
