期刊
TETRAHEDRON LETTERS
卷 50, 期 52, 页码 7239-7241出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2009.09.168
关键词
Mukaiyama reaction; Ionic liquids; Thiazolinium salt; Dihydropyranones
资金
- PUNCH-Orga interregional network (Pole Universitaire de Chimie Organique)
- Ministere de la Recherche et des Nouvelles Technologies
- CNRS (Centre National de la Recherche Scientifique)
- Regions Basse-et Haute-Normandie and the European Union (FEDER)
Mukaiyama aldol reaction between benzaldehyde and Danishefsky diene is promoted by ionic liquid-type salts. Hence, thiazolinium salts have been found to be the most efficient for this transformation. On a mechanistic point of view, only the Mukaiyama process is observed Without any hetero Diels-Alder cycloaddition. In some cases, cyclisation of the Mukaiyama adduct occurred without addition of TFA. Interestingly, the thiazolinium catalyst can be recycled at least 10 times Without loss of activity. (C) 2009 Elsevier Ltd. All rights reserved.
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