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Cerium tetrahydrate

Ammonium cerium(IV) nitrate on reaction with acetone or acetophenone generates acetyl- or benzoylformonitrile oxides, respectively (99). These nitrile oxides dimerize to furoxans and give, in the presence of alkenes and alkynes, 3-acetyl- or 3-benzoyl-4,5-dihydroisoxazoles and 3-acetyl- or 3-benzoylisoxazoles, respectively the yield of the isoxazole derivatives was improved on using ammonium cerium(III) nitrate tetrahydrate-formic acid (99). [Pg.12]

Cerium(IV) sulfate is used in radiation dosimeters and as an oxidizing agent in volumetric analysis. The tetrahydrate is used in dyeing and printing textiles, and in waterproofing. [Pg.204]

Cement, laboratory, 189 Cerium amalgam, 15 Cesium, metallic, 79 Chloroamine, 59 Chlorides, anhydrous, 28, 29 of silicon, 42 Chloroplumbic acid, 48 Chromi-oxalates, 37 Chromous acetate, 122 Chromous chloride, 124, 125 solution, 124 tetrahydrate, 126 trihydrate, 126 Cinnabar, 20 Cobalti-oxalates, 37... [Pg.191]

Acetyl- and 3-benzoylisoxazoles have been conveniently obtained by one-pot reactions of alkynes with ammonium cerium(IV) nitrate or ammonium cerium(III) nitrate tetrahydrate in acetone or acetophenone these processes probably involve 1,3-DC of nitrile oxides formed by nitration of the carbonyl compound by cerium salts <02TL7035>. [Pg.261]

Cerium(IV) sulphate (0 1m). Dissolve 40 4 g of cerium(IV) sulphate tetrahydrate, Ce(S04)2.4H20, or 63 6g cerium(IV) diammonium sulphate dihydrate, Ce(S04)2.2(NH4)2S04.2H20, in a cold mixture of 500 ml water and 50 ml concentrated sulphuric acid, and dilute the solution with water to 1 litre. [Pg.572]

Acetyl- and 3-benzoylisoxazoles 389 (and isoxazolines) have been prepared by one-pot reactions of alkynes (and alkenes) with ammonium cerium(iv) nitrate (CAN(lv)) or ammonium cerium(lll) nitrate tetrahydrate (CAN(m))-formic acid, in acetone or acetophenone. These processes probably involve 1,3-dipolar cycloaddition of nitrile oxides produced via nitration of the carbonyl compound by cerium salts. The existence of nitrile oxides as reaction intermediates was proved by the formation of the dimer furoxan 390 when the above reaction was carried out in absence of any dipolarophile (Scheme 95) <2004T1671>. An analogous improved procedure has been applied to alkynyl glycosides as dipolarophiles for the preparation of carbohydrate isoxazoles <2006SL1739>. [Pg.430]

The reactions of several alkenes and alkynes with ammonium cerium(lV) nitrate [CAN(IV)] or ammonium cerium(III) nitrate tetrahydrate [CAN(III)]-formic acid in acetone under reflux gave 3-acetyl-4,5-dihydroisoxazoles 4 (R = Me) and 3-acetylisoxazoles 5 (R = Me), respectively through nitrile oxide 1,3-dipolar cycloaddition (1,3-DC). The... [Pg.238]

Sulfuric acid, cerium(4+) salt (2 1), tetrahydrate. Dyeing and printing textiles, analytical reagent, waterproofing, mildewproofing. Atomergic Chemetals Noah Chem. Rhdne-Poulenc. [Pg.122]

Cerex U 60. See Olive oil PEG-6 esters Cerfak N-100. See Cocamide DEA Ceria. See Cerium oxide Ceric acid. See Cerotic acid Ceric oxide. See Cerium oxide Ceric sulfate tetrahydrate. See Cerium sulfate (ic)... [Pg.818]

CAS 10294-42-5 EINECS/ELINCS 237-029-5 Synonyms Ceric sulfate tetrahydrate Cerium sulfate... [Pg.819]

Ammonium cerium(lll) sulfate tetrahydrate NH4Ce(S0,)2 AHjO 21996-38-0 422.343 monocl cry SH2O... [Pg.742]

Pig. 5. Cry.stal structure of cerium(IV) sulfate tetrahydrate. The atomic coordinates are those given by Lindgren... [Pg.305]

See other pages where Cerium tetrahydrate is mentioned: [Pg.354]    [Pg.299]    [Pg.354]    [Pg.1736]    [Pg.458]    [Pg.448]    [Pg.1118]    [Pg.706]    [Pg.706]    [Pg.707]    [Pg.768]    [Pg.698]    [Pg.698]    [Pg.699]    [Pg.760]    [Pg.823]    [Pg.397]    [Pg.386]    [Pg.315]    [Pg.830]    [Pg.676]    [Pg.685]    [Pg.742]    [Pg.780]    [Pg.780]    [Pg.781]    [Pg.856]    [Pg.744]    [Pg.744]    [Pg.745]    [Pg.806]    [Pg.281]    [Pg.304]    [Pg.304]    [Pg.778]    [Pg.778]    [Pg.779]    [Pg.854]   
See also in sourсe #XX -- [ Pg.397 ]



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Cerium sulfate tetrahydrate

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