Visible photocatalysis of novel oxime phosphonates: synthesis of β-aminophosphonates
作者:Yong-Hong Li、Chun-Hai Wang、Su-Qian Gao、Feng-Ming Qi、Shang-Dong Yang
DOI:10.1039/c9cc06075h
日期:——
A novel type of oxime phosphonate was synthesized and used in the intermolecular cascade radical addition reaction of alkenes to access β-aminophosphonates via visible-light-driven N-centered iminyl radical-mediated and redox-neutral selective C–P single-bond cleavage in an active phosphorus radical route. The procedure is characterized by its ability to achieve the construction of Csp3–P and Csp3–N
Anti‐headache chemistry: In the presence of a tailored modular P,P ligand the nickel‐catalyzed addition of HCN, generated in situ from TMS‐CN, to styrene derivatives proceeds with an unprecedented level of stereocontrol (up to 97 % ee) to give 2‐aryl‐acetonitriles, for example, the depicted precursor of Ibuprofen.
of aryl halides and activated alkylhalides in DMF in the presence of catalytic amount of NiBr(2)bipy leads to cross-coupling products in good to high yields. The method applies to the synthesis of alpha-aryl ketones, alpha-aryl esters, and allylated compounds from readily available organic halides. Optimization of the process has been obtained by slowly adding the most reactive organic halide (usually
1,2-Dibutoxyethane-Promoted Oxidative Cleavage of Olefins into Carboxylic Acids Using O<sub>2</sub> Under Clean Conditions
作者:Jinhua Ou、Hong Tan、Saiyu He、Wei Wang、Bonian Hu、Gang Yu、Kaijian Liu
DOI:10.1021/acs.joc.1c01701
日期:2021.11.5
the oxidative cleavage of olefins to carboxylic acids using a 1,2-dibutoxyethane/O2 system under clean conditions. This novel oxidation system also has excellent functional-group tolerance and is applicable for large-scale synthesis. The target products were prepared in good to excellent yields by a one-pot sequential transformation without an external initiator, catalyst, and additive.