Reaction of alkyne allyl alcohols tethered with N-(p-tolylsulfonamide) in the presence of a cationic gold(I) catalyst gave new cycloisomerization products, 4-oxa-6-azatricyclo[3.3.0.0(2,8)]octanes.
A tandem platinum dichloride-catalyzed cycloisomerization and rearrangement reaction of enynes leads to the formation of 2,4-pentadienals, 1-aryl-tetrahydro-1H-indenes, or 3-methylene-4-vinylcyclohex-1-enes; depending upon the substituent(s) and tether group of the enynes, the platinum dichloride-catalyzed cycloisomerization products, bicyclo-hept-2-enes, undergo a Claisen rearrangement, a 1,5-hydrogen shift, or a vinylcyclopropane rearrangement.
A new tandem PtCl2‐catalyzed cycloisomerization and rearrangement reaction of enynes leads to dienals, aryl‐tetrahydro‐1H‐indenes or methylenevinylcyclohexenes depending on the substituents.
Gold(I)-Catalyzed Cycloisomerization of Alkynyl Hydroxyallyl Tosylamides to 4-Oxa-6-azatricyclo[3.3.0.0 2,8 ]octanes. -(PARK, Y.; KIM, S. Y.; PARK, J. H.; CHO, J.; KANG, Y. K.; CHUNG*, Y. K.; Chem. Commun. (Cambridge) 47 (2011) 18, 5190-5192, http://dx.doi.org/10.1039/c1cc10907c ; Dep. Chem., Coll. Nat. Sci., Seoul Natl. Univ., Seoul 151-747, S. Korea; Eng.) -M. Paetzel 36-171
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