Abstract
AbstractThe first organocatalytic asymmetric [4+3]‐cycloaddition of 2‐aminophenyl α,β‐unsaturated carbonyls with in situ generated azaoxyallyl cations was developed, and enantioenriched functionalized seven‐membered 1,4‐benzodiazepine‐3‐ones were obtained in good yields and with excellent enantioselectivities. This approach was also extended to the first asymmetric [4+3]‐cycloaddition of δ‐hydroxy α,β‐unsaturated carbonyls, affording 1,4‐oxazepanes in one step under mild conditions. Several of the novel adducts demonstrated promising bioactivity in the prevention of peripheral nerve degeneration.magnified image
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