Squaramide catalyzed enantioselective iodolactonization of allenoic acids
An asymmetric iodolactonization reaction of allenoic acids has been extensively studied. Eight different chiral squaramides were prepared in a straightforward manner and investigated as organocatalysts. The reaction protocol is operationally simple to exe
Asymmetric iodolactonization of γ- and δ-unsaturated carboxylic acids has been explored in the presence of six different chiral organocatalysts 5-8. The catalyst 6b was found to facilitate the cyclization of 5-arylhex-5-enoic acids 1 to the corresponding
Tungen, Jorn E.,Nolsoe, Jens M. J.,Hansen, Trond V.
supporting information
p. 5884 - 5887
(2013/02/23)
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