Phosphoric Acid → Alpha-Ionone

HRID 2352477Notes

Reaction equation

HRID 2352477 reaction equation
[CH3:1][C:2]1[CH2:7][CH2:6][CH2:5][C:4]([CH3:9])([CH3:8])[C:3]=1/[CH:10]=[CH:11]/[C:12]([CH3:14])=[O:13].P(=O)(O)(O)O>>[CH3:1][C:2]1[CH:3](/[CH:10]=[CH:11]/[C:12]([CH3:14])=[O:13])[C:4]([CH3:9])([CH3:8])[CH2:5][CH2:6][CH:7]=1

Participants

3

Reactant 2

HCID 1004Phosphoric AcidHCID 638014I2-Ionone

Product 1

HCID 5282108Alpha-Ionone

Procedure

The same procedure was used as for β-ionone except phosphoric acid was used as the cyclizing agent. Boiling point 63°-65° C./0.1 mm; nD25 1.4960; yield 3.8 g.

Sources & evidence

ORD record
ord-00b2262b598d49bb8f98421ac3454553
Source dataset
uspto-grants-1989_10
Patent number
US04877607

Reaction notes

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