Lonza Inc.

Gesa Paradies

Thomas Büchner

Christian Schnider

Anton Zenklusen

Markus Bicker

Dario Veghini

Justin Yang

Thomas Riedel

The invention relates to a process for decolorizing a composition comprising a betaine comprising the steps of The invention also relates to uses of ion exchange materials and decolorized solutions and compositions obtainable by the inventive process.

Methods for decolorizing compositions comprising betaines

Subject of the invention is a method for the production of L-carnitine, comprising the steps of

Methods for the production of L-carnitine

Organic dithiopyrophosphates of formula wherein R, R, R, Rand Rindependently are hydrogen, Calkyl, chloromethyl or bromomethyl, are prepared in a two-step process from the corresponding 1,3-diols and thiophosphoryl chloride, using 3-methylpyridine both as solvent and as base. 

Process for he production of organic dithiopyrophosphates

Betaines of formula RN-Q-COO(I), wherein R is Calkyl and Q is Calkanediyl, optionally substituted with hydroxy, are prepared in one step by adding an &#x3c9;-halocarboxylate of formula X-Q-COOR' (II), wherein Q is as defined above, R&#x2032; is Clalkyl and X is chlorine, bromine or iodine, to an aqueous solution containing a tertiary amine of formula RN (III), Wherein R is as defined above and a base selected from alkali hydroxides and alkaline earth hydroxides. The process is particularly suited to the production of L-carnitine.

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Gesa Paradies