Stereoselective α-Aminoallylation of Aldehydes with Chiral<i>tert</i>-Butanesulfinamides and Allyl Bromides<sup>†</sup>
作者:José C. González-Gómez、Mohamed Medjahdi、Francisco Foubelo、Miguel Yus
DOI:10.1021/jo101379u
日期:2010.9.17
combination of an aldehyde, an allylic bromide, and tert-butanesulfinamide in the presence of indium metal and titanium tetraethoxide allows straightforward access to homoallylamine derivatives in high yields and stereoselectivities. Moreover, the synthetic utility of the enantioenriched homoallylamine derived from n-decanal was illustrated in a concise synthesis of (+)-isosolenopsin. In this context, similar
Stereoselective Synthesis of Azetidines and Pyrrolidines from <i>N</i>-<i>tert</i>-Butylsulfonyl(2-aminoalkyl)oxiranes
作者:Mohamed Medjahdi、José C. González-Gómez、Francisco Foubelo、Miguel Yus
DOI:10.1021/jo9016666
日期:2009.10.16
Base-inducedcyclization of enantiopure (2-aminoalkyl)oxiranes allowed the stereospecific formation of pyrrolidin-3-ols and/or 2-(hydroxymethyl)azetidines, depending on the reaction conditions. The oxidation of 2-(hydroxymethyl)azetidines led to azetidine-2-carboxylic acids in high yields.