<i>tert-</i>Butyl Nitrite as a Twofold Hydrogen Abstractor for Dehydrogenative Coupling of Aldehydes with <i>N</i>-Hydroxyimides
作者:Peng-Fei Dai、Yi-Ping Wang、Jian-Ping Qu、Yan-Biao Kang
DOI:10.1021/acs.orglett.1c03434
日期:2021.12.17
practical transition metal/catalyst/halogen-free dehydrogenative coupling of aldehydes with N-hydroxyimides promoted solely by tert-butyl nitrite under mild conditions was developed. tert-Butyl nitrite generates two radicals (tBuO and NO) and thus works as a twofold hydrogen abstractor. A diverse array of N-hydroxyimide esters were prepared from either aliphatic or aromatic aldehydes. Benzoyl-substituted
A photoinduced cross-dehydrogenative-coupling (CDC) reaction between aldehydes and <i>N</i>-hydroxyimides by a TiO<sub>2</sub>–Co ascorbic acid nanohybrid under visible light irradiation
In this study, we performed a visible light-mediated aerobic photo-cross dehydrogenative coupling (CDC) reaction between aldehydes and N-hydroxyimides using TiO2–AA–Co as a photocatalyst for the synthesis of active esters. The synergistic and selective effects of the cobalt ascorbic acid complex (Co–AA) and TiO2 nanoparticles on the visible-light photocatalytic activity were explored. The method possesses
A visible light mediated cross-dehydrogenative-coupling (CDC) reaction has been developed for the synthesis of N-hydroxyester derivatives from aldehydes and N-hydroxyimides.
N‐Doped Yellow TiO
<sub>2</sub>
Hollow Sphere‐Mediated Visible‐Light‐Driven Efficient Esterification of Alcohol and
<i>N</i>
‐Hydroxyimides to Active Esters
作者:Krishnadipti Singha、Subhash Ch. Ghosh、Asit Baran Panda
DOI:10.1002/asia.201900878
日期:2019.9.16
photocatalyst using aqueous titanium peroxocarbonate complex (TPCC) solution as precursor and NH4 OH. In the developed strategy, the ammonium ion of TPCC and NH4 OH acts as nitrogen source and structure-directing agent. The synthesized N-TiO2 hollow spheres are capable of promoting the synthesis of active esters of N-hydroxyimide and alcohol through simultaneous selective oxidation of alcohol to aldehyde followed