Hydroarylation of styrenes with electron-rich arenes over acidic ion-exchange resins
A series of acidic cation-exchange resins were used for the hydroarylation of resorcinol with styrene, in which resin D072 exhibited the excellent catalytic performance in this reaction with 99% conversion of styrene and 90% selectivity of 4-(1-phenylethyl)resorcinol. It was applied to the hydroarylation of various electron-rich arenes with styrenes, and the hydroarylated products were quantitatively obtained. This catalyst could be used for four consecutive runs with slight decrease in activity. The hydroarylation of resorcinol with styrene over resin D072 in a fixed bed was completed effectively with 94% selectivity and 99% conversion, and this green continuous process is potentially applicable to large-scale productions.
Microwave-accelerated alkylation of arenes/heteroarenes with benzylic alcohols using antimony(III) chloride as catalyst: Synthesis of O-heterocycles
An efficient protocol for alkylation of electron-rich arenes/heteroarenes with benzylic alcohols under microwave irradiation using antimony(III) chloride as catalyst has been developed. The mild reaction conditions, high yields, operational simplicity, and applicability to various substrates render the approach a useful route for the synthesis of diaryl/triarylalkane. In addition, a new route for the conversion of ortho-alkenylated phenols into functionalized O-heterocycles has been accomplished. Georg Thieme Verlag Stuttgart ? New York.
Shukla, Prashant,Choudhary, Manoj K.,Nayak, Sandip K.
supporting information; experimental part
p. 1585 - 1591
(2011/08/03)
REACTION OF PYROCATECHOL AND RESORCINOL WITH STYRENE IN THE PRESENCE OF ALUMINUM PHENOLATE
The alkylation of pyrocatechol and resorcinol with styrene in the presence of aluminum phenolate leads to a mixture of isomeric (α-methylbenzyl)dihydroxybenzenes, in which the ortho-alkylation products as a rule predominate.
Kozlikovskii, Ya. B.,Koshchii, V. A.,Butov, S. A.
p. 543 - 546
(2007/10/02)
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