Method for producing 1,1-diarylethanes
AssigneeKureha Kagaku Kogyo Kabushiki Kaisha
InventorsMasahiro Akatsu, Hajime Takayama, Takeshi Matsuoka
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Abstract
This invention relates to a method for producing 1,1-diarylethanes expressed by the following general formula (III): ##STR1## wherein R.sup.1 -R.sup.5 each stand for a hydrogen atom or an alkyl group having 1-3 carbon atoms. This method comprises the reaction of styrenes expressed by the following general formula (I) with an alkylbenzene expressed by the following general formula (II), and is characterized in that the catalyst used is an H-L type zeolite with a SiO.sub.2 /Al.sub.2 O.sub.3 ratio of at least 4, or a zeolite modified by exchanging said H-L type zeolite with a bi- or tri-valent metal ion. ##STR2## wherein R.sup.1 -R.sup.5 have the same meanings as defined above.
Claims5
In a method for producing 1,1-diarylethanes expressed by the following general formula (III) by the reaction of styrenes expressed by the following general formula (I) with alkylbenzenes expressed by the following general formula (II):
- ##STR4## wherein R.sup.1 -R.sup.5 each stand for a hydrogen atom or an alkyl group having 1-3 carbon atoms, the improvement comprising using a catalyst which is zeolite L in H form with a SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of at least 4, or a zeolite modified by exchanging said zeolite L in H form with a bi- or tri-valent metal ion.
Dependencies are inferred from the claim text.