Forging C−S(Se) Bonds by Nickel‐catalyzed Decarbonylation of Carboxylic Acid and Cleavage of Aryl Dichalcogenides
作者:Jing‐Ya Zhou、Yong‐Ming Zhu
DOI:10.1002/ejoc.202100115
日期:2021.5.7
A practical protocol is developed for the one‐pot construction of C−S(Se) bonds through nickel‐catalyzed decarbonylation of carboxylic acid and aryl dichalcogenides. This approach featured broad substrate scope and good functional group tolerance.
Visible-Light-Mediated Alkylation of Thiophenols via Electron Donor–Acceptor Complexes Formed between Two Reactants
作者:Yi-Ping Cai、Fang-Yuan Nie、Qin-Hua Song
DOI:10.1021/acs.joc.1c01433
日期:2021.9.3
A metal-free, photocatalyst-free, photochemical system was developed for the direct alkylation of thiophenols via electrondonor–acceptor (EDA) complexes (KEDA = 145 M–1) between two reactants, N-hydroxyphthalimide esters as acceptors and thiophenol anions as donors, in the presence of a tertiary amine. The EDA complexes in the reaction system have a broad range of visible-light absorption (400–650
开发了一种无金属、无光催化剂的光化学系统,用于通过两种反应物之间的电子供体 - 受体 (EDA) 配合物 ( K EDA = 145 M –1 )直接烷基化苯硫酚,N-羟基邻苯二甲酰亚胺酯作为受体和苯硫酚阴离子作为供体,在叔胺的存在下。反应体系中的 EDA 配合物具有广泛的可见光吸收范围(400-650 nm),可以在阳光下有效触发反应。
Nickel‐Catalyzed Inter‐ and Intramolecular Aryl Thioether Metathesis by Reversible Arylation
A nickel-catalyzed aryl thioether metathesis has been developed to access high-value thioethers. 1,2-Bis(dicyclohexylphosphino)ethane (dcype) is essential to promote this highly functional-group-tolerant reaction. Furthermore, synthetically challenging macrocycles could be obtained in good yield in an unusual example of ring-closingmetathesis that does not involve alkene bonds. In-depth organometallic
Iodine‐Promoted Tunable Synthesis of 2‐Naphthyl Thioethers and 1‐Naphthyl Thioethers
作者:Yishu Bao、Xiuqin Yang、Zonghao Dai、Suyu Ji、Qingfa Zhou、Fulai Yang
DOI:10.1002/adsc.201801562
日期:2019.4.23
An iodine‐promoted regioselective sulfenylation/deoxygenation/aromatization reaction of 1‐tetralones with disulfides has been developed. This process could be modified to synthesize 2‐naphthyl thioethers and 1‐naphthyl thioethers in moderate to excellent yields, respectively. Furthermore, when the reaction was extended to 2‐tetralones, 2‐naphthyl thioethers were obtained as the sole products. The current
Catalytic Cleavage and Reformation of Ethereal σ-Bonds
作者:Masahito Murai、Kazuki Origuchi、Kazuhiko Takai
DOI:10.1246/cl.180361
日期:2018.7.5
Ether-exchange reaction of alkyl aryl ethers with alcohols and thiols via the cleavage of the C(sp2)–O bond is described. Bi(OTf)3 was found to be a most effective catalyst, and etherification of fused-aromatic ethers proceeded efficiently. Monitoring of reactions revealed conceptually new transetherification between two different ethers, which can be regarded as single-bond metathesis under the same