作者:Danilo Annibali、Gerhard Ecker、Wilhelm Fleischhacker、Thomas Helml、Wolfgang Holzer、Christian R. Noe
DOI:10.1007/s007060050318
日期:2000.1.15
The synthesis of 2,3-disubstituted 2,3-dihydrobenzofuran diastereomers is described. The key step in the reaction sequence is the chemoselective reduction of a tert. alcohole with tert.-butylamine-borane/AlCl3. The relative configuration of the substituents on the dihydrofurane moiety was assigned via NMR spectroscopy.