PRODUCTION OF MONO AND 1,7-BIS-N-HYDROXYALKYL-CYCLENE AND LITHIUM SALT COMPLEXES

PRODUCTION OF MONO AND 1,7-BIS-N-HYDROXYALKYL-CYCLENE AND LITHIUM SALT COMPLEXES

The invention relates to the process for mono- and 1,7-bis-N- beta -hydroxyalkylation of cyclene, the corresponding mono- and 1,7-bis-N- beta -hydroxyalkyl-1,4,7,10-tetraazacyclododecane-Li-salt complexes as intermediate products in the process and the use of the N-(6-hydroxy-2,3-dimethyl-1,3-dioxep...

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Hauptverfasser: PETROV ORLIN, BLASZKIEWICZ PETER
Format: Patent
Sprache:eng ; slv
Schlagworte:
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Zusammenfassung:The invention relates to the process for mono- and 1,7-bis-N- beta -hydroxyalkylation of cyclene, the corresponding mono- and 1,7-bis-N- beta -hydroxyalkyl-1,4,7,10-tetraazacyclododecane-Li-salt complexes as intermediate products in the process and the use of the N-(6-hydroxy-2,3-dimethyl-1,3-dioxepan-5-yl)-1,4,7,10-tetraazacyclododecane-LiCl complex for the production of gadobutrol [Gd ocmplex of N-(1-hydroxy-methyl-2,3-dihydroxypropyl)-1,4,7-triscarboxymethyl-1,4,7,10-tetraazacyclododecane].