A Highly Efficient CuCl2-Catalyzed C–S Coupling of Aryl Iodides with Tetraalkylthiuram Disulfides: Synthesis of Aryl Dithiocarbamates
作者:Zhi-Bing Dong、Qiang Cao、Han-Ying Peng、Yu Cheng
DOI:10.1055/s-0036-1589166
日期:2018.4
contributed equally to this work Abstract A highlyefficient copper(II)-catalyzed C–S cross-coupling reaction of aryliodides with tetraalkylthiuram disulfides was developed. With only 1 mol% of CuCl2 as catalyst, zinc powder as reductant, and K2CO3 as base, aryliodides reacted with tetraalkylthiuram disulfides in DMSO furnishing the corresponding aryl dithiocarbamates in good to excellent yields
‡这些作者对这项工作做出了同等的贡献 抽象的 开发了一种高效的铜(II)催化的芳基碘化物与四烷基秋兰姆二硫化物的CS交叉偶联反应。在DMSO中,只有1 mol%的CuCl 2作为催化剂,锌粉作为还原剂,K 2 CO 3作为碱,芳基碘化物与四烷基秋兰姆二硫化物反应,提供了相应的芳基二硫代氨基甲酸酯,收率很好。该方案是对先前工作的改进,具有方便的性能,催化剂的添加量低,不需要任何配体并提供了良好的收率。该方法具有广泛的底物范围,并使用便宜且容易获得的起始原料。 开发了一种高效的铜(II)催化的芳基碘化物与四烷基秋兰姆二硫化物的CS交叉偶联反应。在DMSO中,只有1 mol%的CuCl 2作为催化剂,锌粉作为还原剂,K 2 CO 3作为碱,芳基碘化物与四烷基秋兰姆二硫化物反应,提供了相应的芳基二硫代氨基甲酸酯,收率很好。该方案是对先前工作的改进,具有方便的性能,催化剂的添加量低,不需要任何配体并
Copper-Catalyzed C(sp<sup>2</sup>)–S Coupling Reactions for the Synthesis of Aryl Dithiocarbamates with Thiuram Disulfide Reagents
作者:Zhi-Bing Dong、Xing Liu、Carsten Bolm
DOI:10.1021/acs.orglett.7b02911
日期:2017.11.3
An efficient protocol for the copper-catalyzed preparation of aryl dithiocarbamates from aryl iodides and inexpensive, environmentally benign tetraalkylthiuram disulfides was developed. The features of mild reaction conditions, high yields, and broad substrate scope render this new approach synthetically attractive for the preparation of potentially biologically active compounds.
A New Synthesis of Thioamides and Dithiocarbamates from Organolithium Derivatives
作者:S. Gronowitz、A. -B. Hörnfeldt、M. Temciuc
DOI:10.1055/s-1993-25888
日期:——
The reaction of organolithium derivatives with thiuram monosulfides gives a convenient method for the synthesis of both aromatic and aliphatic thioamides in good yields. In our hands, the reaction of organolithium derivatives with tetramethylthiuram disulfide gave only dithiocarbamates and not a mixture of these and thioamides.
Copper-Catalyzed Synthesis of S-Aryl Dithiocarbamates from Tetraalkylthiuram Disulfides and Aryl Iodides in Water
作者:Xiang-mei Wu、Guo-bing Yan
DOI:10.1055/s-0037-1612086
日期:2019.3
An efficient approach for the copper-catalyzed synthesis of aryl dithiocarbamates from aryl iodides and tetraalkylthiuram disulfides in water is described. Without additional ligand and organic solvent, the coupling reaction could provide a series of S-aryl dithiocarbamates in moderate to good yields.
The reaction of various functionalized ary] and heteroaryl bromides with i-PrMgCl.LiCl produces highly reactive Grignardreagents complexed by LiCl, which react with tetramethylthiuramdisulfide [(Me 2 NCS 2 ) 2 ] leading tothe corresponding dithiocarbamates in excellent yields. Various transformations of the dithiocarbamates to thiols, thiol salts or thioethers have been demonstrated.