Synthesis of Oxazolidinones by a Hypervalent Iodine Mediated Cyclization of
<i>N</i>
‐Allylcarbamates
作者:Mirdyul Das、Arantxa Rodríguez、Pui Kin Tony Lo、Wesley J. Moran
DOI:10.1002/adsc.202001451
日期:2021.3.16
The preparation of oxazolidinones by the hypervalentiodinemediatedcyclization of allylcarbamates is described. A versatile range of substrates can be converted into substituted oxazolidinones primed for further transformations. Derivatization of the products at both ends is demonstrated. A preliminary attempt at the enantioselective formation of an oxazolidinone using a chiral iodane is also presented
Methoxycarbonyl-protected methallyl amine serves as an excellent substrate for chloroperoxidase-mediated asymmetric epoxidation. The resulting (R)-epoxide (94% ee) was converted to the title compound in three steps with nearly complete maintenance of stereochemical integrity. Titanium tetrachloride ring-opening of the epoxide provided the chlorohydrin with excellent selectivity and inversion of the