Laboratoire de Chimie Organique, Institute of Chemistry, Biology and Innovation (CBI), ESPCI Paris, CNRS (UMR8231), PSL Research University , 10 rue Vauquelin, 75231 Paris Cedex 05, France.
R&D Sanofi, 1 Avenue Pierre Brossolette, 91382 Chilly-Mazarin Cedex, France.
Org Lett. 2017 May 19;19(10):2706-2709. doi: 10.1021/acs.orglett.7b01051. Epub 2017 May 9.
Structurally diverse macrocyclic pyridones can be efficiently synthesized by a rhodium(III)-catalyzed C-H activation/heterocyclization of ω-alkynyl α-substituted acrylic hydroxamates. The use of a O-pivaloyl hydroxamate as directing group was crucial to achieve efficient catalyst turnover in a redox-neutral process.
通过铑(III)催化的ω-炔基α-取代丙烯酰胺肟酯的 C-H 活化/杂环化反应,可以高效合成结构多样的大环吡啶酮。使用 O-特戊酰基羟肟酸作为导向基团对于在氧化还原中性过程中实现有效的催化剂周转率至关重要。