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Phosphines go one‐pot: The one‐pot synthesis of cyclic α‐amino esters from azlactones and allenes by a phosphine‐catalyzed [3+2]‐cycloaddition reaction followed by a ring opening of the azlactone moiety is presented. The products are isolated as single regioisomers in good overall yields and high enantioselectivities (up to 95 % ee). The possibility for easy modifications of the obtained products...
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