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Synthesis 2007(1): 155-158
DOI: 10.1055/s-2006-950308
DOI: 10.1055/s-2006-950308
PSP
© Georg Thieme Verlag Stuttgart · New York
Enantiomerically Pure Bis-β-diketones: Valuable Building Blocks for Metallosupramolecular Chemistry
Weitere Informationen
Publikationsverlauf
Received
22 June 2006
Publikationsdatum:
09. Oktober 2006 (online)
Abstract
A series of enantiomerically pure bis-β-diketone derivatives was prepared by a Claisen-type condensation between protected tartaric acid diesters and several ketones. Hereby the tartaric acid unit is introduced as either a 2,2-dimethyldioxolane or as a 5,6-dimethoxy-5,6-dimethyl-1,4-dioxane derivative. The yields of the Claisen reaction are relatively low, but the starting materials are readily available, so that the one-step procedure leads to the bis-β-diketone derivatives in up to gram quantities.
Key words
Claisen condensation - β-diketone - chirality - ligand