期刊
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
卷 2011, 期 11, 页码 2101-2110出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejoc.201001672
关键词
Bicyclic compounds; Domino reactions; Michael addition; Aldol reactions; Diastereoselectivity
资金
- Spanish Ministerio de Ciencia e Innovacion (MICINN) [CTQ2009-12320-BQU, ACI2009-0956]
- Universidad Complutense (Grupos de Investigacion) [920234]
The base-promoted Michael-aldol anionic domino reactions of cyclic a-nitro ketones and alpha,beta-unsaturated aldehydes afforded bicyclo[n.3.1]alkanone systems of seven different ring sizes (n = 3-9), normally in excellent yields. This can be considered the first general method for the synthesis of this type of carbocycle. Furthermore, up to four stereocentres are generated, three of which are contiguous and include a functionalized quaternary bridgehead carbon atom. The diastereoselectivity was often complete, was much higher than in less general reactions based on related domino processes, and involved the generation of a different major diastereomer due to the control of the Michael and aldol individual steps of the reaction by the nitro group.
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