Highly enantioselective synthesis of α-azido-β-hydroxy methyl ketones catalyzed by a cooperative proline–guanidinium salt system
作者:Ángel Martínez-Castañeda、Kinga Kędziora、Iván Lavandera、Humberto Rodríguez-Solla、Carmen Concellón、Vicente del Amo
DOI:10.1039/c3cc49371g
日期:——
The combined activity of (S)-proline and an achiral tetraphenylborate TBD-derived guanidinium salt permits the aldol reaction between azidoacetone and aromatic, or heteroaromatic aldehydes. The α-azido-β-hydroxy methyl ketones obtained as products can be isolated in good yield, with high diastereo- and enantioselectivity.