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Zn‐Mediated Catalytic Enantio‐ and Diastereoselective Addition of TosMIC to Ketones
作者:Abdul Raheem Keeri、Andrea Gualandi、Andrea Mazzanti、Janusz Lewinski、Pier Giorgio Cozzi
DOI:10.1002/chem.201504362
日期:2015.12.21
The first catalytic asymmetric addition of TosMIC to unactivated ketones is presented. A combination of Me2Zn and aminoalcohol catalyst promoted the aldol addition/cyclization reaction to render oxazolines possessing a fully substituted stereocenter with excellent yields (up to 92 %), high enantioselectivities (up to 96 %), and complete diastereoselectivity. The chiral oxazolines were then used to