A Simplified Protocol for the Stereospecific Nickel-Catalyzed C–S Vinylation Using NiX2 Salts and Alkyl Phosphites
作者:Austin D. Marchese、Bijan Mirabi、Egor M. Larin、Mark Lautens
DOI:10.1055/s-0039-1690717
日期:2020.1
A Ni-catalyzed C–S cross-coupling using only NiI2 (0.5–2.5 mol%) and P(OiPr)3 (2.0–10.0 mol%) is reported. Using an air-stable Ni(II) precatalyst, and a cheap and commercially available ligand, a scalable and robust method was developed to cross-couple various thiophenols and styryl bromides, including some sterically encumbered thiols, an α-bromocinnamaldehyde as well as a thiolation-cyclization.
据报道,仅使用NiI 2(0.5–2.5 mol%)和P(O i Pr)3(2.0–10.0 mol%)的Ni催化的C–S交叉偶联。使用空气稳定的Ni(II)预催化剂和便宜的市售配体,开发了一种可扩展且稳健的方法来交叉偶联各种硫酚和苯乙烯基溴化物,包括一些空间受限的硫醇,α-溴肉桂醛和硫醇化环化。
Copper-mediated stereospecific C–H oxidative sulfenylation of terminal alkenes with disulfides
A new copper and iodine-mediated C–H oxidative sulfenylation of olefins with diaryl disulfides for the stereospecific synthesis of vinyl thioether is described.
描述了一种新的铜和碘介导的C-H氧化磺化方法,使用二芳基二硫化物对烯烃进行立体特异性合成乙烯硫醚。
NaI-Mediated Acetamidosulphenylation of Alkenes with Nitriles as the Nucleophiles: A Direct Access to Acetamidosulfides
作者:Yang Zheng、Yue He、Guangwei Rong、Xiaolu Zhang、Yuecheng Weng、Kuiyong Dong、Xinfang Xu、Jincheng Mao
DOI:10.1021/acs.orglett.5b02752
日期:2015.11.6
An example of a transition-metal-free, direct, and efficient acetamidosulphenylation reaction of alkenes using nitriles as the nucleophiles via a radical process is presented. This reaction shows a broad substrate scope and high regioselectivity and provides straightforward access to acetamidosulfide derivatives in moderate to high yields.
Abstract Organic disulfides (dipropyl, dihexyl, or diphenyl disulfide) are convenient and efficient agents for the sulfanylation of 1-alkenylaluminum derivatives. Organic disulfides (dipropyl, dihexyl, or diphenyl disulfide) are convenient and efficient agents for the sulfanylation of 1-alkenylaluminum derivatives.