Chiral hypervalent iodine-catalyzed enantioselective oxidative Kita spirolactonization of 1-naphthol derivatives and one-pot diastereo-selective oxidation to epoxyspirolactones
作者:Muhammet Uyanik、Takeshi Yasui、Kazuaki Ishihara
DOI:10.1016/j.tet.2010.04.060
日期:2010.7
hydrogen-bonding interactions as a chiral catalyst for the enantioselectiveKitaoxidativespirolactonization of 1-naphthol derivatives 5. Iodosylarenes 8 were generated in situ from iodoarenes 7 and mCPBA as a co-oxidant. Furthermore, epoxyspirolactone 15 was obtained by the one-pot oxidation of 5 with mCBPA in the presence of 7g. Thus, the enantioselectiveoxidation of 5 to 6 and the successive enantio-
Forging Medium Rings via I(I)/I(III)‐Catalyzed Diene Carbofunctionalization
作者:You‐Jie Yu、Joel Häfliger、Zi‐Xuan Wang、Constantin G. Daniliuc、Ryan Gilmour
DOI:10.1002/anie.202309789
日期:2023.9.18
An I(I)/I(III) catalysis-based strategy to access 8-membered carbocycles via the direct carbofunctionalization of 2-phenethyl-substituted 1,3-dienes is disclosed. This strategy to generate densely functionalized, fluorinated benzocyclooctenes is modular and through changes in the oxidation/activation regime and the external nucleophile, the challenging cyclization can be merged with formation of allylic