Table 7.
Asymmetric insertion of copper carbenoids into tetrahydrofuran C(sp3)–H bonds under heterogeneous reaction condition.
 | |||
| conditions | % yield | 25/26 | 25 ee (%) |
| homogeneous | 74 | 56:44 | 64 |
| heterogeneous | 50 | 59:41 | 62 |
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