Isobutylene → 2,4,4-Trimethyl-1-pentene

HRID 1744039Notes

Reaction equation

HRID 1744039 reaction equation
[CH3:1][C:2](=[CH2:4])[CH3:3]>C(CC(C)(C)C)(C)C>[CH3:4][C:2]([CH2:3][C:2]([CH3:4])([CH3:3])[CH3:1])=[CH2:1].[CH3:4][C:2]([CH3:3])=[CH:1][C:2]([CH2:3][C:2]([CH3:4])([CH3:3])[CH3:1])([CH3:1])[CH3:4]

Participants

4

Reactant 1

HCID 8255Isobutylene

Product 2

HCID 78682,4,4-Trimethyl-1-penteneHCID 1702442,4,4,6,6-Pentamethyl-2-heptene

Reagents, catalysts & solvents 1

HCID 109072,2,4-TrimethylpentaneSolvent

Procedure

Isobutylene is dimerized according to U.S. Pat. No. 5,877,372 at a temperature of 190° F. to produce a stream of 49.2 wt. % diisobutylene (DIB) and 1.5 wt. % triisobutylene (TIB) in isooctane. The product diisobutylene stream contains 700 ppb of sulfur.

Sources & evidence

ORD record
ord-60d3ca74bd15496f91b29eadfc615366
Source dataset
uspto-grants-2006_03
Patent number
US07012167B2

Reaction notes

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