Schmitt

Schaaf P, Dejardin Ph and Schmitt A 1985 Reflectometrie appliquee aux interfaces diffuses possibilites et limites de la technique Rev. Phys. Appl. 20 631-40... [Pg.2850]

U. Schmitt and J. Brinkmann. Discrete time-reversible propagation scheme for mixed quantum classical dynamics. Chem. Phys., 208 45-56, 1996. [Pg.420]

U. Schmitt. Gemischt klassisch-quantenmechanische Molekulardynamik im Liouville-Formalismus. Ph.D. thesis (in german), Darmstadt, 1997. [Pg.420]

Knoevenagel reaction Knorr pyrrole synthesis. Kolbe>Schmitt reaction Leuckart reaction Mannich reaction... [Pg.1210]

CARBOXYLATION OF PHENOLS ASPIRIN AND THE KOLBE-SCHMITT REACTION... [Pg.1006]

The key compound m the synthesis of aspirin salicylic acid is prepared from phe nol by a process discovered m the nineteenth century by the German chemist Hermann Kolbe In the Kolbe synthesis also known as the Kolbe—Schmitt reaction, sodium phen oxide IS heated with carbon dioxide under pressure and the reaction mixture is subse quently acidified to yield salicylic acid... [Pg.1006]

Carboxylation of Phenols Aspirin and the Kolbe-Schmitt Reaction... [Pg.1007]

The Kolbe-Schmitt reaction is an equilibrium process governed by thermodynamic control The position of equilibrium favors formation of the weaker base (salicylate ion) at the expense of the stronger one (phenoxide ion) Thermodynamic control is also responsible for the pronounced bias toward ortho over para substitution Salicylate anion IS a weaker base than p hydroxybenzoate and predominates at equilibrium... [Pg.1007]

The Kolbe-Schmitt reaction has been applied to the preparation of other o hydroxy benzoic acids Alkyl derivatives of phenol behave very much like phenol itself... [Pg.1007]

Section 24 10 The Kolbe-Schmitt synthesis of salicylic acid is a vital step m the preparation of aspirin Phenols as their sodium salts undergo highly regioselective ortho carboxylation on treatment with carbon dioxide at elevated temperature and pressure... [Pg.1017]

Kolbe-Schmitt reaction (Section 24 10) The high pressure re action of the sodium salt of a phenol with carbon dioxide to give an o hydroxybenzoic acid The Kolbe-Schmitt reac tion IS used to prepare salicylic acid in the synthesis of as pinn... [Pg.1287]

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