Retropinacol/Cross-Pinacol Coupling Reactions - A Catalytic Access to 1,2-Unsymmetrical Diols
作者:Ulf Scheffler、Reinhard Stößer、Rainer Mahrwald
DOI:10.1002/adsc.201200358
日期:2012.10.8
A new concept to access unsymmetrical 1,2-diols with high yields is reported. This new methodology is based on a retropinacol/cross-pinacol coupling process. This transformation is characterized by its operational simplicity and very mild reaction conditions.
Electroreductive cross-coupling between aldehydes and ketones or imines <i>via</i> cathodically generated dianions
作者:Lu-Jun Wang、Peng Ye、Ninghua Tan、Bo Zhang
DOI:10.1039/d2gc03177a
日期:——
class of compounds. Nonetheless, the preparation of unsymmetrical 1,2-diols via the direct cross-coupling of two different carbonylcompoundsundersimple and mild conditions remains an elusive goal. Herein, an operationally simple electroreductive cross-coupling of two common carbonyls, aldehydes and ketones using electrons as safe reducing agents is reported. By applying this new protocol, a library