FeCl<sub>3</sub>·6H<sub>2</sub>O Catalyzed Disproportionation of Allylic Alcohols and Selective Allylic Reduction of Allylic Alcohols and Their Derivatives with Benzyl Alcohol
been found to be an efficient catalyst for the disproportionation of allylicalcohols, which provides a convenient method for selective transformation of allylicalcohols to alkenes and α,β-unsaturated ketones. Furthermore, this catalytic system is also effective for highly selective allylicreduction of allylicalcohols, allylic ethers, and allylic acetates with benzyl alcohol under neutral and convenient
FeCl3·6H2O-catalyzed selective reduction of allylic halides to alkenes with concomitant oxidation of benzylic alcohols to aldehydes
作者:HouCai Zhang、RuiTing Liu、XiGeng Zhou
DOI:10.1007/s11426-013-5042-2
日期:2014.2
Iron-catalyzed direct reduction of allylic halides with benzylic alcohol was achieved, providing a new, simple, and efficient method for conducting highly regioselective hydrodehalogenation. This method not only features a readily available reductant, an inexpensive catalyst, simple manipulation, and good tolerance of functional groups including nitriles, nitro, esters, and methoxyl groups, it also
An efficient allylic C−H phosphorylation has been achieved through the DDQ‐promoted cross‐dehydrogenative coupling of 1,3‐diarylpropenes with P(O)H compounds at room temperature. This method provides a convenient route to allylphosphonates in up to 97% yield with good functional group compatibility.
2,3‐Dichloro‐5,6‐dicyano‐1,4‐benzoquinone (DDQ)‐Mediated Tandem Oxidative Annulation for Preparing 2,2‐Disubstituted 2,3‐Dihydroquinazolin‐4(1H)‐ones
作者:Dongping Cheng、Xianhang Yan、Yueqi Pu、Jing Shen、Xiaoliang Xu、Jizhong Yan
DOI:10.1002/ejoc.202001479
日期:2021.2.12
The tandem oxidative annulation of o‐aminobenzamides and 1,3‐diarylpropenes was mediated by DDQ via dual cross‐dehydrogenative‐coupling (CDC) reactions. It provides an efficient and convenientmethod for the synthesis of 2,2‐disubstituted 2,3‐dihydroquinazolin‐4(1H)‐ones.
A DDQ-mediated tandem annulation of 2-aminochromones with 1,3-diarylpropenes is disclosed, which provides the azaxanthones in moderate to good yields. The oxidative coupling, intramolecular cyclization and dehydro-aromatization might be involved in this high atom-efficiency reaction.