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- Karlsson, StaffanMittuniversitetet,Institutionen för naturvetenskap (-2008) (author)
Organocatalysts Promote Enantioselective 1,3-Dipolar Cycloadditions of Nitrones with 1-Cycloalkene-1-carboxaldehydes
- Article/chapterEnglish2003
Publisher, publication year, extent ...
- Wiley,2003
- printrdacarrier
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- LIBRIS-ID:oai:DiVA.org:miun-1583
- https://urn.kb.se/resolve?urn=urn:nbn:se:miun:diva-1583URI
- https://doi.org/10.1002/ejoc.200300172DOI
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- Language:English
- Summary in:English
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Notes
- In the presence of enantiopure organocatalysts, 1-cycloalkene-1-carboxaldehydes and various nitrones furnished fused isoxazolidines. Thus, some chiral pyrrolidinium salts catalyzed the formation of such cycloadducts in high diastereo- and enantioselectivity (up to 92% ee). The predominant diastereomer, the exo one, was mostly obtained in excellent diastereoselectivity (> 99:1 dr). Furthermore, after recrystallization of one of the cycloadducts, this was obtained enantiomerically pure (> 99% ee). The absolute configuration of one of the cycloadducts was determined.
Subject headings and genre
- NATURVETENSKAP Kemi hsv//swe
- NATURAL SCIENCES Chemical Sciences hsv//eng
- dipolar cycloadditions
- Chemistry
- Kemi
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- Högberg, Hans-ErikMittuniversitetet,Institutionen för naturvetenskap (-2008)(Swepub:miun)hansho (author)
- MittuniversitetetInstitutionen för naturvetenskap (-2008) (creator_code:org_t)
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- In:European Journal of Organic Chemistry: Wiley2003:15, s. 2782-27911434-193X1099-0690
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