3-Ethyl-4-methylhexane synthesis

4synthesis methods

Product Name:3-Ethyl-4-methylhexane
CAS Number:3074-77-9
Molecular formula:C9H20
Molecular Weight:128.26

[2,3'-Bifuran]-5,5'(2H,2'H)-dione, 3',4'-dihydro-2,2'-dimethyl-

19918-24-2
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589-53-7
65 suppliers
$42.00/1mL

922-28-1
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$86.00/5mL

52896-91-0
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3074-77-9
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Yield:589-53-7 11% ，52896-91-0 70%

Reaction Conditions:

with hydrogen at 220; for 7 h;

Steps:

3

The Ir-ReO_x/Si0₂ catalyst was prepared using the published method [Chen et a., ChemSiisChem 2013, 6, 613] and reactions were carried out in batch mode as described above for the Cu-ZnO/AJ₂( system, except that a range of temperatures between 200 and 300 °C were studied. The results for the deoxygenation of ALD 3 are shown in Table 1. Starting at the same temperature as used for Cu-ZnO/AbO:?, an improved yield of 72% hydrocarbons was observed using the Ir-ReOx/SiCh catalyst. A considerable degree of C-C bond cleavage was seen, as was the case with the copper-zinc catalyst, which prompted attempts to perform the hydrogenation at lower temperatures. As shown in Table I, reduction of the reaction temperature first to 2.40 and then 2.20 °C increased selectivity for the Cio product, i.e. the product which would result if no C-C bond cleavage occurred, while increasing the overall hydrocarbon yield up to 88%. Decreasing the reaction time (not shown) or the reaction temperature (200 °C) was found to substantially lower the yield of hydrocarbons. Table 1. Angelica lactone dimer 3 conversion and hydrocarbon yield with different catalytic systems. Temp. Time Conv. Hydroc Yield (%)^a Catalyst (^CC) ⁽h⁾ (%) c₇ c₈ c. fetal Cu-ZnO/Al₂⁽ + γ- 300 100 3 12 5 21 41 A1₂0₃ Cu-ZnO/Al₂0, + 300 3 100 15 35 14 68 HPW/MCM-41" Ir-ReCVSiOz 300 3 100 16 19 33 72 fr-ReO_x/Si0₂ 240 6 100 13 10 60 84 Tx-ReO_x/SiG₂ 220 1 100 1 1 1 6 70 88 Tx-ReO_x/Si0₂ 200 100 0 6 1 10 Pt-ReO_x/C 240 6 100 2 8 18 60 88 Pt-ReO_x/C 220 100 z 4 7 13 26 Pt-WO_x/A]₂0₃ 240 6 100 1 10 19 ^aMolar %C yields as determined by GC-MS integration against -alkane standards. '2Gt% 12-phosphotungstic acid (HPW) loaded on mesoporous silica (MCM-41).