CeCl3•7H2O-SiO2:: An efficient and reusable catalyst for the synthesis of β-keto enol ethers

被引：4

作者：

Sabitha, G ^{[1
]}

Reddy, NM ^{[1
]}

Sudhakar, K ^{[1
]}

Yadav, JS ^{[1
]}

机构：

[1] Indian Inst Chem Technol, Div Organ Chem, Hyderabad 500007, Andhra Pradesh, India

来源：

LETTERS IN ORGANIC CHEMISTRY | 2005年 / 2卷 / 08期

关键词：

beta-keto enol ethers; reusability; cerium chloride; alcohols;

D O I：

10.2174/157017805774717599

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Cerium(III) chloride heptahydrate adsorbed on silica gel (CeCl3.7H(2)O-SiO2) efficiently catalyzes the conversion of cyclic beta-diketones to beta-keto enol ethers in good yields. The catalyst is reusable and can be applied several times with little decrease in the yield of the reactions.

引用

页码：763 / 766

页数：4

共 19 条

[1]

BABU RS, 2002, SYNLETT SPOTLIGHT, V51, P1935

[2] The CeCl3•nH2O/NaI system in organic synthesis:: An efficient water tolerant Lewis acid promoter [J].

Bartoli, G ;

Marcantoni, E ;

Sambri, L .

SYNLETT, 2003, (14) :2101-2116

[3] Iodine-catalyzed synthesis of β-keto enol ethers [J].

Bhosale, RS ;

Bhosale, SV ;

Wang, TY ;

Zubaidha, PK .

TETRAHEDRON LETTERS, 2004, 45 (39) :7187-7188

[4] ENANTIOSELECTIVE SYNTHESIS OF (+)-KJELLMANIANONE [J].

CHEN, BC ;

WEISMILLER, MC ;

DAVIS, FA ;

BOSCHELLI, D ;

EMPFIELD, JR ;

SMITH, AB .

TETRAHEDRON, 1991, 47 (02) :173-182

[5] Mild acetalisation of mono and dicarbonyl compounds catalysed by titanium tetrachloride.: Facile synthesis of β-keto enol ethers [J].

Clerici, A ;

Pastori, N ;

Porta, O .

TETRAHEDRON, 2001, 57 (01) :217-225

[6] A new and efficient chemoenzymatic route to both enantiomers of 4-hydroxycyclohex-2-en-1-one [J].

Demir, AS ;

Sesenoglu, O .

ORGANIC LETTERS, 2002, 4 (12) :2021-2023

[7] PERYDROINDANONE DERIVATIVES .1. APPLICABILITY OF DIELSALDER REACTION [J].

HOUSE, HO ;

RASMUSSON, GH .

JOURNAL OF ORGANIC CHEMISTRY, 1963, 28 (01) :27-&

[8] REACTIONS OF BETA-KETO-ENOL ETHERS WITH BROMINE AQUEOUS SOLUTION [J].

MARSHALL, DR ;

ROBERTS, TR .

JOURNAL OF THE CHEMICAL SOCIETY B-PHYSICAL ORGANIC, 1971, (05) :797-&

[9] Reaction of phosphonate-stabilized carbanions with cyclic enones bearing a beta-leaving group [J].

Mphahlele, MJ ;

Modro, TA .

JOURNAL OF ORGANIC CHEMISTRY, 1995, 60 (25) :8236-8240

[10]

NELSON PH, 1992, SYNTHESIS-STUTTGART, P1287

← 1 2 →