Alpha-Methylstyrene → Cumene

HRID 501662Notes

Reaction equation

HRID 501662 reaction equation
[CH3:1][C:2]([C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][CH:5]=1)=[CH2:3].C1(C(C)C)C=CC=CC=1.C1(O)C=CC=CC=1.[O-]O.C1(C(C)C)C=CC=CC=1>>[C:4]1([CH:2]([CH3:3])[CH3:1])[CH:9]=[CH:8][CH:7]=[CH:6][CH:5]=1

Participants

4

Reactant 3

HCID 7407Alpha-MethylstyreneHCID 22624766HCID 22624766, compound2×HCID 53627471Cumen hydroperoxide

Product 1

HCID 7406Cumene

Procedure

However, the typical process for industrial production of α-methylstyrene is the cumene-phenol production process. This cumene-phenol production process contains a step in which cumene hydroperoxide obtained by oxidation of raw material cumene is concentrated to 80 to 85% followed by acid decomposition to phenol and acetone and neutralization/washing. The resulting crude phenol contains such substances as acetone, water, cumene, α-methylstyrene and phenol, and purified phenol is produced from this crude phenol by distillation, while at the same time, acetone and α-methylstyrene are respectively separated and recovered (see, for example, Patent Documents 3 and 4).

Sources & evidence

ORD record
ord-27a5bb5d08c94e28b394cffe8bfa38ae
Source dataset
uspto-grants-2010_08
Patent number
US07772336B2

Reaction notes

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