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Reaction supercritical carbon dioxide

Construction of supercritical carbon dioxide reaction system. 248... [Pg.226]

CONSTRUCTION OF SUPERCRITICAL CARBON DIOXIDE REACTION SYSTEM... [Pg.248]

Diels-Alder Reaction in Supercritical Carbon Dioxide (sc-COi)... [Pg.286]

Leitner W (1999) Reactions in Supercritical Carbon Dioxide (SCCO2). 206 107-132... [Pg.262]

Among the SCFs, supercritical carbon dioxide (SCCO2) provides additional benefits [73], since it is environmentally benign, inexpensive, available in large quantities, nonflammable, and exhibits low toxicity. Its critical pressure is relatively low (73.4 bar) and it has an ambient critical temperature (31.3 °C). CO2 can be easily removed from reaction mixtures by depressurization [74]. [Pg.109]

The reaction of a carboxylic acid with N,Af -carbonyldiimidazolellH33 (abbreviated as CDI), forming an imidazolide as the first step followed by alcoholysis or phenolysis of the imidazolide (second step), constitutes a synthesis of esters that differs from most other methods by virtue of its particularly mild reaction conditions.t41,[5] It may be conducted in two separate steps with isolation of the carboxylic acid imidazolide, but more frequently the synthesis is carried out as a one-pot reaction without isolation of the intermediate. Equimolar amounts of carboxylic acid, alcohol, and CDI are allowed to react in anhydrous tetrahydrofuran, benzene, trichloromethane, dichloromethane, dimethylformamide, or nitromethane to give the ester in high yield. The solvents should be anhydrous because of the moisture sensitivity of CDI (see Chapter 2). Even such unusual solvent as supercritical carbon dioxide at a pressure of 3000 psi and a temperature of 36-68 °C has been used for esterification with azolides.[6]... [Pg.39]

Although numerous advantages are associated with the use of supercritical carbon dioxide (scC02) as an ecologically benign and user friendly reaction medium, systematic applications to metal-catalyzed processes are still rare. A notable exception is a recent report on the use of scC02 for the formation of industrially relevant polymers by ROMP and the eyelization of various dienes or enynes via RCM [7]. Both Schrock s molybdenum alkylidene complex 24 and the ruthe-... [Pg.68]

Supercritical atomization in spray coating, 7 70 Supercritical carbon dioxide, 9 456,24 2, 15 applications of, 24 20 as a medium for chemical reactions, 12 808-809... [Pg.907]

Very recently Jackson reported the use of supercritical carbon dioxide (SCCO2) in this tandem reaction, lowering the required total pressures of carbon monoxide and hydrogen [54]. [Pg.82]

See other pages where Reaction supercritical carbon dioxide is mentioned: [Pg.67]    [Pg.67]    [Pg.433]    [Pg.261]    [Pg.518]    [Pg.235]    [Pg.203]    [Pg.199]    [Pg.797]    [Pg.263]    [Pg.187]    [Pg.337]    [Pg.219]    [Pg.952]    [Pg.297]    [Pg.228]    [Pg.122]    [Pg.155]    [Pg.159]    [Pg.165]    [Pg.117]    [Pg.25]    [Pg.50]    [Pg.224]    [Pg.21]    [Pg.344]    [Pg.46]    [Pg.48]    [Pg.1361]    [Pg.1378]    [Pg.14]    [Pg.18]    [Pg.18]    [Pg.20]    [Pg.22]    [Pg.32]    [Pg.411]    [Pg.138]    [Pg.97]    [Pg.265]    [Pg.95]   
See also in sourсe #XX -- [ Pg.127 ]



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