Diastereoselective Michael Addition of Magnesium Amide toO-(2-Alkenoyl)TEMPOs and Comparison of Reactivity with Acyl Substituent-Modified Carboxylic Analogues
Diastereoselective Michael Addition of Magnesium Amide to<i>O</i>-(2-Alkenoyl)TEMPOs and Comparison of Reactivity with Acyl Substituent-Modified Carboxylic Analogues
O-(2-Alkenoyl)TEMPOs bearing an O–N bond in the acyl substituent are highly reactive in Michael addition of magnesium amide compared with their acyl substituent-modified analogs. Highly diastereoselective addition is achieved to the AlMe3-treated O-(2-alkenoyl)TEMPO as an acceptor with the Mg amide generated from optically active secondary amine.