Rasmussen

Fredenslund, A., J. Gmehling, and P. Rasmussen "Vapor-Liquid Equilibria using UNIFAC," Elsevier, New York, 1977. 

Fredenslund, Aa., Gmehling, J., Rasmussen, P., "Vapor-Liquid Equilibria Using ONIFAC, a Group-Contribution Method,"... 

Niketic S R and K Rasmussen 1977. The Consistent Force Field A Documentation. Berlin, Springer-Verlag... 

The ketone is added to a large excess of a strong base at low temperature, usually LDA in THF at -78 °C. The more acidic and less sterically hindered proton is removed in a kineti-cally controlled reaction. The equilibrium with a thermodynamically more stable enolate (generally the one which is more stabilized by substituents) is only reached very slowly (H.O. House, 1977), and the kinetic enolates may be trapped and isolated as silyl enol ethers (J.K. Rasmussen, 1977 H.O. House, 1969). If, on the other hand, a weak acid is added to the solution, e.g. an excess of the non-ionized ketone or a non-nucleophilic alcohol such as cert-butanol, then the tautomeric enolate is preferentially formed (stabilized mostly by hyperconjugation effects). The rate of approach to equilibrium is particularly slow with lithium as the counterion and much faster with potassium or sodium. 

Masina, M. R. Nkosi, P. A. Rasmussen, P. W. et al. Determination of Metal Ions in Pineapple Juice and Effluent of a Emit Canning Industry, /. Chem. Educ. 1989, 66, 342-343. 

Remcho, V. T. McNair, H. M. Rasmussen, H. T. HPLC Method Development with the Photodiode Array Detector, /. Chem. Educ. 1992, 69, A117-A119. 

K. Rasmussen, in G. Berthier and co-workers, eds., Eecture Notes in Chemisty, Vol. 27, Potential Energy Functions in Conformational Analysis, Springer-Vedag, Berlin, 1985. 

E. F. Rasmussen, Dy Kiln Operators Manual, Agriculture Handbook 188, U.S. Department of Agriculture, U.S. Government Printing Office, Washington, D.C., 1961. 

S. E. Rasmussen andJ. Danielsen, dcta Chem. Scand. 14, 1862 (1960). 

A. Fredenslund, J. Gmehting, and P. Rasmussen, Uapor—Eiquid Using UNIFAC, a Group Contribution Method, Elsevier Scientific Publishing,... 

Figure 10 Mean values of bond lengths and bond angles of pyrazole structures (a) Ehrlich (X-ray) (b) Berthou et at. (X-ray) (c) Rasmussen et at. (neutron, corrected for rigid body motion) (d) Rasmussen et at. (X-ray, 295 K) ...

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