PIDA-mediated synthesis of oxazoles through oxidative cycloisomerization of propargylamides
摘要:
PIDA [phenyliodine(III) diacetate] in AcOH or AcOH-HFIP (hexafluoroisopropanol) efficiently promotes the formation of 2,5-disubstituted oxazoles via the oxidative cycloisomerization of propargylamide derivatives. (C) 2010 Elsevier Ltd. All rights reserved.
Iodine(III)‐Mediated/Catalyzed Cycloisomerization–Amination Sequence of
<i>N</i>
‐Propargyl Carboxamides
作者:Yuki Okamura、Daisuke Sato、Akira Yoshimura、Viktor V. Zhdankin、Akio Saito
DOI:10.1002/adsc.201700587
日期:2017.9.18
(Diacetoxyiodo)benzene or iodine(III) catalyst, in situ generated from iodobenzene precatalyst with Oxone, promotes the cycloisomerization–aminationsequence of N-propargyl carboxamides with bis(sulfonyl)imides under mild conditions, thereby leading to the direct formation of oxazoles bearing nitrogen functional groups.