Process for the preparation of alkylated cyclodextrin derivatives, methylated cyclodextrin derivatives which can be prepared by the process, and the use of the products

摘要

The invention relates to a process in which alpha -, beta - and/or gamma -cyclodextrin are reacted in a suitable base with a suitable O-alkylating agent and subsequently, where appropriate after neutralisation of the reaction mixture, the resulting alkylated cyclodextrin derivatives are removed from the reaction mixture in a manner known per se, characterised in that alpha -, beta - and/or gamma -cyclodextrin are initially dissolved in part of the base and subsequently the O-alkylating agent and further base are added.