Manufacture of 4,4'-diisopropylbiphenyl

Details Manufacture of 4,4'-diisopropylbiphenyl Manufacture of 4,4'-diisopropylbiphenyl

1989-09-08

1991-06-25

Garvin, Patrick P.

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By condensation of entire molecules or entire hydrocarbyl...

585466, C07C 268

Patent

active

050269402

ABSTRACT:
The selective isopropylation of biphenyl or 4-isopropylbiphenyl to diisopropylbiphenyl while maximizing the yield of the 4,4'-diisopropoylbiphenyl isomer is achieved by carrying out the reaction in the presence of an acidic crystalline molecular sieve with pore aperture 5.7-6.1 .ANG., preferably SAPO-11 or ZSM-12.

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