efficient method is a green and practical way for the preparation of the thioethers, for it tolerates a wide range of substrates such as aryl and alkyl thiols, as well as benzylic, allylic, secondary, tertiary, and even the less reactive aliphatic alcohols.
Photoredox Mediated Nickel Catalyzed Cross-Coupling of Thiols With Aryl and Heteroaryl Iodides via Thiyl Radicals
作者:Martins S. Oderinde、Mathieu Frenette、Daniel W. Robbins、Brian Aquila、Jeffrey W. Johannes
DOI:10.1021/jacs.5b11244
日期:2016.2.17
Ni-catalyzed cross-couplings of aryl, benzyl, and alkyl thiols with aryl and heteroaryl iodides were accomplished in the presence of an Ir-photoredox catalyst. Highly chemoselective C-Scross-coupling was achieved versus competitive C-O and C-Ncross-couplings. This C-Scross-coupling method exhibits remarkable functional group tolerance, and the reactions can be carried out in the presence of molecular
We report here an efficient, mild and biomolecule-compatible method for constructing C–S bonds.
我们在这里报告了一种高效、温和且生物分子兼容的构建C-S键的方法。
Palladium-Catalyzed C-H Acylation of Arenes Using Thioethers as Directing Groups
作者:Bo Xu、Wei Liu、Chunxiang Kuang
DOI:10.1002/ejoc.201400096
日期:2014.4
Thioethers have been proven to be reliable directinggroups for palladium catalyzed alkenylation of arenes via C–H activation. Mechanistic investigation reveals that the C–H cleavage of arenes is the turnover-limiting step, and an acetate-bridged dinuclear cyclopalladation intermediate is involved. The alkenylated thioethers can be easily removed and transformed into a variety of useful groups.
Fe(<scp>ii</scp>)-Catalyzed alkenylation of benzylic C–H bonds with diazo compounds
作者:Jiang-Ling Shi、Qinyu Luo、Weizhi Yu、Bo Wang、Zhang-Jie Shi、Jianbo Wang
DOI:10.1039/c9cc01060b
日期:——
We report herein an alkenylation of benzylic C(sp3)–H bonds with diazocompounds via carbon cation intermediates with DDQ as the oxidant in the presence of a catalytic amount of Fe(II). Diphenylmethane, toluene, benzyl methyl sulfide and their derivatives could be applied as substrates to afford the tetra-substituted olefin products, which may serve as useful building blocks in organic synthesis.