반응 #84194

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1-octene

α-methylstyrene

norbornylene

(R)-(+)-limonene

(+)-dihydrocarvone

cis-cyclooctene

→

5-isopropyl-2-methylcyclohexanone

수율 99.0%

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후처리

1. 1
   기타The yields of the hydrogenated products
2. 2
   기타with excellent yields (see Table 1, entries 5-7)
3. 3
   기타were also hydrogenated at room temperature
4. 4
   기타At room temperature

실험 절차

The yields of the hydrogenated products were determined by gas chromatography (GC). Hydrogenation of terminal alkenes such as 1-octene and α-methylstyrene proceeded readily within 24 hours at room temperature with excellent yields (see Table 1, entries 5-7). Internal alkenes trans-2-octene, cis-cyclooctene, and norbornylene were also hydrogenated at room temperature (see Table 1, entries 8-10). Hydrogenation of (R)-(+)-limonene occurred selectively at the terminal position; the internal tri-substituted C═C bond was not hydrogenated (see Table 1, entry 11). At room temperature, hydrogenation of (+)-dihydrocarvone occurred only at the C═C bond, affording 5-isopropyl-2-methylcyclohexanone in 99% yield (see Table 1, entry 12).

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