Selective O-alkylation of cresols with methanol:: catalysis by Cs loaded silica, a solid base

被引：9

作者：

Bal, R ^{[1
]}

Sivasanker, S ^{[1
]}

机构：

[1] Natl Chem Lab, Poona 411008, Maharashtra, India

来源：

GREEN CHEMISTRY | 2000年 / 2卷 / 03期

关键词：

D O I：

10.1039/b001097i

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The O-alkylation of hydroxy aromatic compounds such as cresols is conveniently carried out over easy to prepare alkali loaded silica catalysts in the vapour phase with high selectivities (ca. 99%). The activities of the catalysts increase with alkali loading and the basicity of the metal (Cs > K > Na > Li). In the case of p-cresol over Cs/SiO2, the yield of the o-alkylated product is as high as 94%.

引用

收藏

页码：106 / 107

页数：2

相关论文

共 8 条

[1] ALKYLATION OF PHENOL WITH METHANOL OVER ALPO AND SAPO MOLECULAR-SIEVES [J].

DURGAKUMARI, V ;

NARAYANAN, S ;

GUCZI, L .

CATALYSIS LETTERS, 1990, 5 (4-6) :377-384

[2] Vapor-phase reactions of catechol with dimethyl carbonate. Part III: Selective synthesis of veratrole over alumina loaded with potassium nitrate [J].

Fu, Y ;

Baba, T ;

Ono, Y .

APPLIED CATALYSIS A-GENERAL, 1999, 176 (02) :201-204

[3] Vapor-phase reactions of catechol with dimethyl carbonate. Part I. O-methylation of catechol over alumina [J].

Fu, Y ;

Baba, T ;

Ono, Y .

APPLIED CATALYSIS A-GENERAL, 1998, 166 (02) :419-424

[4] SELECTIVE O-METHYLATION OF PHENOL WITH DIMETHYL CARBONATE OVER X-ZEOLITES [J].

FU, ZH ;

ONO, Y .

CATALYSIS LETTERS, 1993, 21 (1-2) :43-47

[5] O-alkylation of phenol derivatives over basic zeolites [J].

Lee, SC ;

Lee, SW ;

Kim, KS ;

Lee, TJ ;

Kim, DH ;

Kim, JC .

CATALYSIS TODAY, 1998, 44 (1-4) :253-258

[6] ANISOLE PRODUCTION BY ALKYLATION OF PHENOL OVER ZSM5 [J].

RENAUD, M ;

CHANTAL, PD ;

KALIAGUINE, S .

CANADIAN JOURNAL OF CHEMICAL ENGINEERING, 1986, 64 (05) :787-791

[7] SELECTIVE O-ALKYLATION OF PHENOL WITH METHANOL OVER SULFATES SUPPORTED ON GAMMA-AL2O3 [J].

SAMOLADA, MC ;

GRIGORIADOU, E ;

KIPARISSIDES, Z ;

VASALOS, IA .

JOURNAL OF CATALYSIS, 1995, 152 (01) :52-62

[8]

SHELDON RA, 1997, CHEM IND LONDON 0106, P13