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Carbocation Catalys...
Carbocation Catalysis : Oxa-Diels-Alder Reactions of Unactivated Aldehydes and Simple Dienes
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- El Remaily, Mahmoud Abd El Aleem Ali Ali (författare)
- KTH,Organisk kemi,Sohag University, Egypt
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- Naidu, Veluru Ramesh (författare)
- KTH,Organisk kemi
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- Ni, Shengjun (författare)
- KTH,Organisk kemi
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- Franzén, Johan (författare)
- KTH,Organisk kemi
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(creator_code:org_t)
- 2015-09-18
- 2015
- Engelska.
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Ingår i: European Journal of Organic Chemistry. - : Wiley-VCH Verlagsgesellschaft. - 1434-193X .- 1099-0690. ; :30, s. 6610-6614
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The versatility of the trityl cation (TrBF4) as a highly efficient Lewis acid organocatalyst is demonstrated in the oxa-Diels-Alder reaction of various unactivated aromatic and aliphatic aldehydes and simple unactivated dienes, such as isoprene and 2,3-dimethylbutadiene. The transformation proceeds smoothly to give 3,6-dihydropyrane adducts in high to moderate yields with catalyst loadings down to 1.0 mol-% under mild reaction conditions. In contrast to most previously reported strategies, this protocol does not require substrate functional group activation, neither by electron-deficient aldehydes (2-oxo aldehydes) or electron-rich dienes (methoxy or amino-butadiene).
Ämnesord
- NATURVETENSKAP -- Kemi -- Organisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Organic Chemistry (hsv//eng)
Nyckelord
- Carbocations
- Cycloaddition
- Organocatalysis
- Trityl ion
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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