Iridium-Catalyzed C3-Selective Asymmetric Allylation Of 7-Azaindoles With Secondary Allylic Alcohols
CHEMICAL COMMUNICATIONS(2021)
Abstract
The development of efficient synthetic methods of 7-azaindoles has been desired due to the useful biological activities and physical properties. We report the first example of the iridium-catalyzed C3-selective asymmetric allylation of 7-azaindoles with racemic secondary allylic alcohols to give only branched allylation products in good to high yields with high enantioselectivity (up to >99.5% ee). Allylic alcohols and 7-azaindoles with a variety of functional groups including halogen and heteroaromatic groups are compatible with the reaction conditions. Furthermore, transformations of the obtained allylation products are demonstrated without a significant loss of enantiomeric excess.
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Key words
allylic alcohols,iridium-catalyzed
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