Table 5.
Hydrozirconation and Pd-catalyzed cross coupling of substituted enynes 25f–o and acyl chloride 26a.
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| entry | 25 | R1 | R2 | R3 | 27 | yield [%] |
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| 1 | f | Ph | Me | H | fa | 55 |
| 2 | g | Ph | H | Me | ga | 0 |
| 3 | h | Ph | Me | Me | ha | 17 |
| 4 | i | Ph | H | Et | ia | 0 |
| 5 | j | Ph | Me | Et | ja | 0 |
| 6 | k | Ph | H | COOEt | ka | 0 |
| 7 | l | Ph | Me | COOEt | la | 0 |
| 8 | m | Ph | H | Br | ma | 0 |
| 9 | n | Ph | Me | Br | na | 0 |
| 10 | o | 4-Me-C6H4 | H | Me | oa | 10 |