Iron‐Mediated Electrophilic Amination of Organozinc Halides using Organic Azides
作者:Simon Graßl、Johannes Singer、Paul Knochel
DOI:10.1002/anie.201911704
日期:2020.1.2
arylated substrates with full retention of configuration. To demonstrate the utility of this reaction, we prepared two amine derivatives of pharmaceutical relevance using this iron-mediated electrophilicamination as the key step.
作者:Hang Luo、Guohua Wang、Yunhui Feng、Wanyao Zheng、Lingya Kong、Yunpeng Ma、Shigeki Matsunaga、Luqing Lin
DOI:10.1002/chem.202202385
日期:2023.1.2
Exogenous photocatalyst-free, single nickel-catalyzed carbon–heteroatomcoupling under visible-light irradiation is reported. Over 15 classes of nucleophile can efficiently couple with aryl/alkene halides to afford valuable heteroatomic arenes/alkenes. The unprecedentedly broad substrate scope and late-stage modification of valuable molecules fully demonstrate the benefits of the method.
SELECTIVE Pd-CATALYZED AMINATIONS ON CHLORO-IODOPYRIDINES: SYNTHESIS OF ETHYL 4-[(6-CHLOROPYRIDIN-3-YL)AMINO]BENZOATE
作者:Rombouts, Geert、Maes, Bert U.W.、Jonckers, Tim H.M.、Loones, Kristof T.J.、Thansandote, Praew、Lautens, Mark
DOI:10.15227/orgsyn.084.0215
日期:——
Selective Palladium-Catalyzed Aminations on 2-Chloro-3-iodo- and 2-Chloro-5-iodopyridine
作者:Bert U. Maes、Kristof T. Loones、Tim H. Jonckers、Guy L. Lemière、Roger A. Dommisse、Achiel Haemers
DOI:10.1055/s-2002-35579
日期:——
Regioselective palladium-catalyzed aminations with anilines on 2-chloro-3-iodo- and 2-chloro-5-iodopyridine have been performed with excellent yields and good selectivity. The use of a large excess of Cs2CO3 in combination with Pd-BINAP catalyst was essential to obtain sufficiently fast reactions. The mild conditions permit the presence of base sensitive functional groups. Moreover, the catalytic system developed also allows the arylamination of aryl iodides.