An efficient, environmentally benign and unprecedented synthesis of various α-sulfenylated amides/esters has been developed under oxygen atmosphere. The reaction shows good functional group tolerance and excellent chemo/regioselectivity. All the desired products were obtained in moderate to excellent yields, even on the gram scale. Practically, the related α-thiol Weinreb amide can be readily transferred
Enantio‐ and Diastereoselective (Ipc)<sub>2</sub>BOTf‐Mediated Aldol Reactions of Morpholine Carboxamides
作者:Lee Pedzisa、Andrii Monastyrskyi、Camille D. Parker、William R. Roush
DOI:10.1002/hlca.202300126
日期:2023.12
Highly enantio- and diastereoselective (Ipc)2BOTf mediated aldolreactions of morpholine carboxamides are described. A wide variety of α-substituted N-acyl morpholine carboxamides were successfully employed, including α-bromo, α-chloro, α-vinyl and para-methoxyphenyl morpholine carboxamides which provided the corresponding aldol products in moderate to excellent yields, and generally with high enantio-