Publikation: Intramolecular Chromium(II)-Catalyzed Pinacol Cross Coupling of 2-Methylene-alpha,omega-dicarbonyls
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2004
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Synlett. 2004, 6(6), pp. 1054-1058. ISSN 0936-5214. eISSN 1437-2096. Available under: doi: 10.1055/s-2004-822895
Zusammenfassung
Using only 10% of CrCl2 as catalyst, manganese-powder as reducing agent and TMSCl as scavenger, 2-methylene-α,ω-dialdehydes and -ketones can be coupled to form cyclic diols diastereoselectively. The diastereomeric excess strongly depends on the ring size and the substituents of the ω-carbonyl group. The greater the ring size the higher diastereoselectivities are observed. In all cases cis-diols are preferentially formed.
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Fachgebiet (DDC)
540 Chemie
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chromium, catalysis, cross-coupling, cyclizations, pinacols
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GROTH, Ulrich, Marc JUNG, Till VOGEL, 2004. Intramolecular Chromium(II)-Catalyzed Pinacol Cross Coupling of 2-Methylene-alpha,omega-dicarbonyls. In: Synlett. 2004, 6(6), pp. 1054-1058. ISSN 0936-5214. eISSN 1437-2096. Available under: doi: 10.1055/s-2004-822895BibTex
@article{Groth2004Intra-9931, year={2004}, doi={10.1055/s-2004-822895}, title={Intramolecular Chromium(II)-Catalyzed Pinacol Cross Coupling of 2-Methylene-alpha,omega-dicarbonyls}, number={6}, volume={6}, issn={0936-5214}, journal={Synlett}, pages={1054--1058}, author={Groth, Ulrich and Jung, Marc and Vogel, Till} }
RDF
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