期刊
CHEMICAL SCIENCE
卷 2, 期 8, 页码 1606-1610出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1sc00235j
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资金
- NIGMS NIH HHS [R01 GM080442] Funding Source: Medline
- NATIONAL INSTITUTE OF GENERAL MEDICAL SCIENCES [R01GM080442] Funding Source: NIH RePORTER
We have developed a method for preparing pyridones from the coupling reaction of acrylamides and alkynes with either stoichometric Cu(OAc)(2) or catalytic Cu(OAc)(2) and air as oxidants. In the course of these studies, it was found that a larger ligand, 1,3-di-tert-butylcyclopentadienyl (termed Cp-t) results in higher degrees of regioselectivity in the alkyne insertion event. The transformation tolerates a broad variety of alkynes and acrylamides. Furthermore, Cp-t and Cp* demonstrate similar catalytic activity. This similarity allows for mechanistic studies to be undertaken which suggest a difference in mechanism between this reaction and the previously studied benzamide system.
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