Selective C-C Bond Scission of Ketones via Visible-Light-Mediated Cerium Catalysis
作者:Yilin Chen、Jianbo Du、Zhiwei Zuo
DOI:10.1016/j.chempr.2019.11.009
日期:2020.1
catalytic manifold for the selectiveC–Cbond scission of ketones via the exploitation of the ligand-to-metal charge transfer (LMCT) excitation mode. Through a cooperative utilization of Lewis acid catalysis and LMCT catalysis, the C–Cbond of ketones could be selectively and effectively cleaved, enabling the installation of different functionalities at each carbon of the cleaved C–Cbond through a sequential
Conjugate Reduction of α,β-Unsaturated Carbonyl Compounds Catalyzed by a Copper Carbene Complex
作者:Valdas Jurkauskas、Joseph P. Sadighi、Stephen L. Buchwald
DOI:10.1021/ol034560p
日期:2003.7.1
[reaction: see text] An N-heterocyclic carbene copper chloride (NHC-CuCl) complex (2) has been prepared and used to catalyze the conjugatereduction of alpha,beta-unsaturated carbonylcompounds. The combination of catalytic amounts of 2 and NaOt-Bu with poly(methylhydrosiloxane) (PMHS) as the stoichiometric reductant generates an active catalyst for the 1,4-reduction of tri- and tetrasubstituted alpha
STUDIES IN THE CYCLIZATION OF THE PRODUCTS OF STOBBE CONDENSATION WITH PROPIOPHENONE
作者:A. M. El-Abbady、S. H. Doss
DOI:10.1139/v65-323
日期:1965.8.1
The isomeric mixture of the half-esters resulting from the Stobbe condensation of propiophenone with diethyl succinate is cyclized with stannic chloride as well as with sodium acetate in acetic anhydride. Cyclization of the ethyl half-ester chlorides with stannic chloride gives the keto-ester "4-carbethoxy-2-methyl-3-phenylcyclopent-2-enone." This on acid hydrolysis and decarboxylation yields 2-me
Photochemical Reduction of Quinolines with γ-Terpinene
作者:Souvik Adak、Sarah E. Braley、M. Kevin Brown
DOI:10.1021/acs.orglett.3c04096
日期:2024.1.12
of complex rings. Herein, we demonstrate a process for photochemical dearomative reduction of quinolines. The process involves capture of a quinoline excited state with γ-terpinene. Importantly, the reaction is chemoselective as other easily reduced functionalities such as halogens or alkenes do not undergo reduction. The mechanism of the reaction has also been investigated. Finally, the generality of
Electroorganic chemistry. XXI. Selective formation of .alpha.-acetoxy ketones and general synthesis of 2,3-disubstituted 2-cyclopentenones through the anodic oxidation of enol acetates