33342-48-2Relevant articles and documents
Divergent Synthesis of Dihydropyranone Stereoisomers via N-Heterocyclic Carbene Catalysis
Zhao, Changgui,Wang, Jian
supporting information, p. 1668 - 1672 (2019/02/19)
We recently developed a novel chiral N-heterocyclic carbene (NHC) catalyzed dynamic kinetic enantioselective acylation (DKEA) and dynamic kinetic diastereoselective acylation (DKDA) of Achmatowicz rearrangement products to generate useful intermediates for the further synthesis of carbohydrates. In this update, we describe a divergent NHC catalytic strategy for the stereoselective preparation of all four isomers starting from a common racemic precursor. The present report provides easy access to diverse optically pure dihydropyranones. (Figure presented.).
Gold catalysis: Non-spirocyclic intermediates in the conversion of furanynes by the formal insertion of an alkyne into an aryl-alkyl C-C single bond
Hashmi, A. Stephen K.,Haeffner, Tobias,Yang, Weibo,Pankajakshan, Sreekumar,Schaefer, Sascha,Schultes, Lara,Rominger, Frank,Frey, Wolfgang
supporting information, p. 10480 - 10486 (2012/11/07)
It takes al-kynes: The formation of furyl-substituted heterocycles from furanynes with donor groups on the furan-alkyne tether and mechanistic control experiments indicate the involvement of open-chained carbenium ions in the overall insertion of an alkyne into a C-C bond, rather than the usual spirocyclic intermediates (see scheme). Copyright
High-pressure and thermally induced intramolecular Diets-Alder reactions of furfuryl fumarates. Influence of tether substituents on diastereoselectivity
Butz, Thomas,Sauer, Juergen
, p. 703 - 714 (2007/10/03)
Asymmetric intramolecular Diels-Alder (IMDA) reactions of optically active furfuryl fumarates result after crystallization in enantiopure 7-oxabicyclo[2.2.1]heptene derivatives that may be useful building blocks for natural product synthesis. The influenc
