A method for separating organic compounds, specifically proteins, is provided. The method for separating organic compounds is based on a combined pi-electron and electrostatic interaction of the exchanger with specific components of the organic compound. The method provides both an anionic and cationic exchanger. Each exchanger can provide more than one dimension of separation.
Several synthetic routes to 3-acetonyl- and 3-(2-oxoethyl)glutarates 1–5 have been explored. The most advantageous involves, as the key steps, the conjugate addition of an appropriately substituted vinylmagnesium bromide to an alkylidenemalonicester, a bis-homologation of the resulting diester and, finally, the reductive ozonolysis of the carbon–carbon double bond. The synthesis can be satisfactorily