Chemistry of hydrocarbon compounds – Aromatic compound synthesis – By condensation of entire molecules or entire hydrocarbyl...
Patent
1990-11-30
1993-05-11
McFarlane, Anthony
Chemistry of hydrocarbon compounds
Aromatic compound synthesis
By condensation of entire molecules or entire hydrocarbyl...
585459, 585400, 585428, 585470, C07C 264, C07C 270, C07C 272, C07C 522
Patent
active
052103536
ABSTRACT:
A process is provided for transaralkylating a class of starting compounds comprised of aryl-substituted lower alkanes and aryl-substituted fused alkylene ring compounds to produce derivatives of such compounds wherein benzyl substituents thereof have different alkyl substituents compared to the starting compounds. The process is carried out by admixing such a starting compound with a lower alkyl-substituted aromatic compound under liquid phase conditions in the presence of a catalytically effective amount of a Friedel-Crafts catalyst. The process makes possible new and economical routes for synthesizing desired lower alkyl-substituted benzyl group containing compounds, such as 2,2-di(lower alkyl-substituted) phenyl propanes and 1,3,3-trimethyl-1-(lower alkyl-substituted)-phenyl indans. Thus, there is provided a three-step process for making dixylylpropane from alpha methyl styrene and also a two-step process for making 1,3,3,6-tetramethyl-1-o-xylyl indan from alpha-4-dimethyl styrene. Provided also is a process for preparing 3,3',4,4'-dixylylmethane from a mixture of isomeric dixylylmethanes.
REFERENCES:
patent: 3321540 (1967-05-01), Trepka
patent: 4929785 (1990-05-01), Hussain
Breder, Jr. E. William
Ghanayem Ibrahim
Meszaros Mark W.
Nemo Thomas E.
Smith Thomas G.
Amoco Corporation
Magidson William H.
McFarlane Anthony
Nemo Thomas E.
Phan Nhat
LandOfFree
Aromatic transformation process does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Aromatic transformation process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aromatic transformation process will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1352425