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ChemicalBook CAS DataBase List 2,4-Dimethyl-3-pentanol
600-36-2

2,4-Dimethyl-3-pentanol synthesis

6synthesis methods
-

Yield:600-36-2 97%

Reaction Conditions:

with C28H35ClCoN5(1+)*Cl(1-);hydrogen;potassium hydroxide in tetrahydrofuran at 20; under 22502.3 Torr; for 16 h;Autoclave;

Steps:

General procedure for Hydrogenation of Ketones
General procedure: In an argon filled glove box, the cobalt catalyst (LNHC/CoCl2 or Co-2a) and the base wereweighted into a 4mL vial equipped with a magnetic stir bar, followed by addition of the solvent.After shaking of the vial for 30 seconds, the carbonyl substrate was then added. The vial wasplaced into a Parr Instruments autoclave, which was then sealed, removed from the glove boxand purged with hydrogen gas. The autoclave was heated to certain temperature. After reactionfor 16 hours, the autoclave was cooled down to 0 oC before releasing the hydrogen gas. Forquantitative GC analysis, biphenyl (1.0 mmol) as internal standard was added. The organiclayer was then filtrated and diluted for GC analysis. The stereo-selectivity of the hydrogenatedproducts of cyclohexanones were determined by NMR with mesitylene as the internal standard.The desired hydrogenation product was further isolated by flash column chromatography.

References:

Zhong, Rui;Wei, Zeyuan;Zhang, Wei;Liu, Shun;Liu, Qiang [Chem,2019,vol. 5,# 6,p. 1552 - 1566] Location in patent:supporting information

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