Sequentially rhodium-catalyzed enantioselective cycloisomerization–hydrogenation syntheses of alkylidene butyrolactone β-hydroxyethanes and alkylidene tetrahydrofuran β-aminoethanes
作者:Nadine Muschelknautz、Frank Rominger、Thomas J. J. Müller
DOI:10.1007/s10593-018-2267-1
日期:2018.3
and ether-tethered alkyne allyl alcohols is an excellent entry to subsequent Rh-catalyzed one-pot hydrogenations in the sense of sequentially Rh-catalyzed processes to chiral alkylidene butyrolactone β-hydroxyethanes and alkylidene tetrahydrofuran β-aminoethanes, respectively, with excellent levels of enantioselectivity.
A Novel One-Pot Iridium-Catalyzed Alder-Ene-Murahashi Sequence
作者:Thomas Müller、Manuela Kummeter、Christian Ruff
DOI:10.1055/s-2007-970753
日期:2007.3
Yne allyl alcohols could be transformed under very mild conditions by a novel iridium-catalyzed one-pot cycloisomerization-Murahashi sequence in 43-77% yield.
作者:Nadine Körber、Frank Rominger、Thomas J.â J. Müller
DOI:10.1002/adsc.200900494
日期:2009.11
easily accessible alkyl and (hetero)aryl-substituted alkynyl allyl alcohols are readily and enantioselectively transformed into 2,7-dioxabicyclo[3.2.1]octanes by a sequential rhodium-catalyzed process. Based on the initial cycloisomerization, the in situ generated rhodium(I)-BINAP complex enables a subsequentreduction with hydrogen and the transformation into bicyclic frameworks.