2-Oxo-1, 3-dioxolane-4-carboxylic Acid and Derivatives Thereof, Their Preparation and Use
AssigneeConstruction Research & Technology GmbH
InventorsJoanna MECFEL-MARCZEWSKI, Burkhard WALTHER, Jochen MEZGER, Radoslaw KIERAT, Rosita STAUDHAMER
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Abstract
2-Oxo-1,3-dioxolane-4-carboxylic acid and derivatives thereof, according to the following formula, in which R1 represents a negative charge, hydrogen or may be methyl or ethyl or an n-valent radical, which may be substituted with at most n−1 further 2-oxo-1,3-dioxolane-4-carboxyl groups, as well as a process for their preparation by means of carboxylation of the corresponding epoxides, a process for their transesterification and their use for the preparation of hydroxyurethanes and as end groups for the blocking of amines.
Claims12
A process for the preparation of a hydroxyurethane, comprising reacting a 2-oxo-1,3-dioxolane-4-carboxylic acid ester according to formula (V),
- wherein R1 represents a negative charge, hydrogen, or a group selected from straight-chain or branched aliphatic groups, aryl groups, aralkyl groups and alkylaryl groups,
- with at least one of a primary amine or a secondary amine.
A process comprising blocking an amine by reaction with a 2-oxo-1,3-dioxolane-4-carboxylic acid ester according to formula (V) as an end group,
- wherein R1 represents a negative charge, hydrogen, or a group selected from straight-chain or branched aliphatic groups, aryl groups, aralkyl groups and alkylaryl groups.
Dependencies are inferred from the claim text.