FP@Si-PdII-Salen-[IM]OH-catalyzed C–C Heck cross-coupling reactiona.
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Entry | Aryl halide | Alkene | Product | t. (min)/NOFb | Conc (%) |
1 |
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11a | 12a | 95/6 | 90 |
2 |
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11a | 12b | 130/8 | 74 |
3 |
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11a | 12c | 130/8 | 80 |
4 |
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11a | 12d | 130/8 | 85 |
5 |
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11a | 12e | 70/5 | 95 |
6 |
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11a | 12f | 70/5 | 95 |
7 |
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11a | 12g | 95/6 | 90 |
8 |
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11a | 12a | 130/8 | 85 |
9 |
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11a | 12b | 130/8 | 70 |
10 |
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11a | 12c | 130/8 | 72 |
11 |
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11a | 12e | 130/8 | 90 |
12 |
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11a | 12h | 95/6 | 93 |
13 |
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11a | 12a | 180/7 | Trace |
14 |
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11a | 12c | 180/7 | N.R. |
15 |
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11a | 12e | 180/7 | 50 |
16 |
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11b | 12i | 95/6 | 94 |
17 |
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11b | 12j | 107/7 | 86 |
18 |
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11b | 12k | 107/7 | 80 |
19 |
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11b | 12i | 107/7 | 88 |
20 |
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11b | 12l | 95/6 | 96 |
21 |
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11b | 12i | 180/7 | 30 |
22 |
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11b | 12j | 180/7 | 35 |
23 |
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11b | 12m | 180/7 | 60 |
Reaction conditions: Iodobenzene (1.0 mmol), styrene (1.0 mmol), EtOH : H2O (2 : 1, v/v, 5.0 mL), 50 °C (on a water bath), N2 inlet (0.3 bar; 0.5 bar for aryl chlorides), catalytic filter paper (7, placed on a glass funnel, containing 1.0 mmol Pd/95 cm2).
Total time spent in different cycles. Cycles refers to number of re-filtration of the residue (Scheme 2).
GC yield.