beta-Damascenone → 1,5,5,9-Tetramethylbicyclo[4.3.0]nona-2,8-dien-7-one

HRID 1448886Notes

Reaction equation

HRID 1448886 reaction equation
[CH3:1][C:2]1[CH:7]=[CH:6][CH2:5][C:4]([CH3:9])([CH3:8])[C:3]=1[C:10](=[O:14])/[CH:11]=[CH:12]/[CH3:13]>O1CCOCC1>[CH3:1][C:2]12[C:12]([CH3:13])=[CH:11][C:10](=[O:14])[CH:3]1[C:4]([CH3:8])([CH3:9])[CH2:5][CH:6]=[CH:7]2

Participants

3

Reactant 1

HCID 5366074beta-Damascenone

Product 1

HCID 126009251,5,5,9-Tetramethylbicyclo[4.3.0]nona-2,8-dien-7-one

Reagents, catalysts & solvents 1

HCID 312751,4-DioxaneSolvent

Procedure

A solution of 2,6,6-trimethyl-1-crotonoyl-1,3-cyclohexadiene (1.0 g.) in 10 ml. of dioxan was heated under the same conditions as described in Example 49 with acidic diatomaceous earth (0.2 g.).

Sources & evidence

ORD record
ord-9d08eef4c4894d2da51f83148f03c733
Source dataset
uspto-grants-1980_02
Patent number
US04187863

Reaction notes

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