The threo-selective reaction of allenic organometallic compounds with imines

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Abstract
The reaction between the imines (2) and the allenic organometallic compounds (3) gives the threo adducts (4) with very high stereoselectivity, while the reaction with 9-but-2-enyl-9-borabicyclo[3.3.1]nonane gives the analogous erythro allylamines stereoselectively.