Replacement of Stoichiometric DDQ with a Low Potential <i>o</i>-Quinone Catalyst Enabling Aerobic Dehydrogenation of Tertiary Indolines in Pharmaceutical Intermediates
作者:Bao Li、Alison E. Wendlandt、Shannon S. Stahl
DOI:10.1021/acs.orglett.9b00111
日期:2019.2.15
(phd = 1,10-phenanthroline-5,6-dione), is shown to be effective for aerobic dehydrogenation of 3° indolines to the corresponding indoles. The results show how low potential quinones may be tailored to provide a catalytic alternative to stoichiometric DDQ, due to their ability to mediate efficient substrate dehydrogenation while also being compatible with facile reoxidation by O2. The utility of the