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The efficient preparation of highly enantioenriched cyclic β‐aryl‐substituted carbonyl compounds has been achieved through the RhI‐catalyzed asymmetric 1,4‐addition of an array of arylboronic acids to cyclic α,β‐unsaturated carbonyl compounds. In the presence of 0.1 or 0.5 mol‐% of the RhI/1g complex, the products of conjugate addition were isolated in 89 to 98 % ee and in good to excellent yield.
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