HCID 20344597, compound → HCID 20344592, compound

HRID 2049851Notes

Reaction equation

HRID 2049851 reaction equation
[CH3:1][C:2]([C:4](=[O:12])[CH:5]=[C:6]([CH3:11])[CH2:7][CH:8]([CH3:10])[CH3:9])=[CH2:3].CC(CC(C)(O)C#CC(C)=C)C>[V]>[CH3:3][CH:2]([C:4](=[O:12])[CH2:5][CH:6]([CH3:11])[CH2:7][CH:8]([CH3:10])[CH3:9])[CH3:1]

Participants

4

Reactant 2

HCID 20344597HCID 20344597, compoundHCID 54385261HCID 54385261, compound

Product 1

HCID 20344592HCID 20344592, compound

Reagents, catalysts & solvents 1

HCID 23990VanadiumCatalyst

Procedure

2,5,7-Trimethyl-1,4-octadien-3-one can be prepared, for example, from 2,4,7-trimethyl-7-octen-5-yn-4-ol by propargylic rearrangement in a manner known per se with the aid of a vanadium catalyst. By catalytically hydrogenating the resulting dienone at room temperature, as described hereinbefore, there is obtained 2,5,7-trimethyl-3-octanone. 6,8-Dimethyl-3-nonen-2-one can be prepared, for example, by aldol condensation of 3,5-dimethyl-hexanal with acetone.

Workup

  1. customat room temperature

Sources & evidence

ORD record
ord-5f2034643aa846f88f01fbe3b22ef08e
Source dataset
uspto-grants-1980_04
Patent number
US04198532

Reaction notes

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