Process for producing stilbene-4,4'-dialdehyde

Details Process for producing stilbene-4,4'-dialdehyde Process for producing stilbene-4,4'-dialdehyde

1985-03-13

1986-04-01

Helfin, Bernard

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

L07C 4569

Patent

active

045799750

ABSTRACT:
Stilbene-4,4'-dialdehyde can be produced by reaction of ethylene with 4-bromobenzaldehyde in the presence of a base and of a palladium compound as catalyst in a simple and economical manner in high yields, by performing the reaction under a partial pressure of ethylene of 0.01 to 1 bar. The stilbene-4,4'-dialdehyde obtained is suitable for example for producing optical brighteners.

REFERENCES:
Journal of Organic Chemistry 43, 2454 (Jun. 9, 1978).
Plevyak et al., Jour. of Org. Chemistry, vol. 43 (1978) 2454-2456.

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