Zinc-Mediated Palladium-Catalyzed Formation of Carbon−Sulfur Bonds
作者:Chad C. Eichman、James P. Stambuli
DOI:10.1021/jo900385d
日期:2009.5.15
aryl and alkyl thiols with aryl bromides in high yields. The addition of zinc chloride to a palladium catalyst system that reportedly failed to promote sulfide formation allows this once ineffective catalyst system to provide the sulfide product in good yield. This paper describes a high-yielding and general monodentate phosphine-ligated palladium catalyst for biaryl and alkyl aryl sulfide formation
Redox-active benzimidazolium sulfonamides as cationic thiolating reagents for reductive cross-coupling of organic halides
作者:Weigang Zhang、Mengjun Huang、Zhenlei Zou、Zhengguang Wu、Shengyang Ni、Lingyu Kong、Youxuan Zheng、Yi Wang、Yi Pan
DOI:10.1039/d0sc06446g
日期:——
Redox-active benzimidazolium sulfonamides as thiolating reagents have been developed for reductive C–S bond coupling. The IMDN-SO2R reagent provides a bench-stable cationic precursor to generate a portfolio of highly active N–S intermediates, which can be successfully applied in cross-electrophilic coupling with various organic halides. The employment of an electrophilic sulfur source solved the problem
已开发出具有氧化还原活性的苯并咪唑磺酰胺作为硫醇化试剂用于还原 C-S 键偶联。IMDN-SO 2 R 试剂提供了一种稳定的阳离子前体,可生成一系列高活性 N-S 中间体,可成功应用于与各种有机卤化物的交叉亲电偶联。采用亲电硫源解决了催化剂失活问题,避免了硫醇的异味,具有条件实用、底物范围广、耐受性好等特点。
Synthesis of 1,3-Dibenzenesulfonylpolysulfane (DBSPS) and Its Application in the Preparation of Aryl Thiosulfonates from Boronic Acids
作者:Yi-Fan Jiang、Wei-Chen Zhu、Xin-Yu Liu、Shi-Yin Tian、Jia-Hui Han、Weidong Rao、Shu-Su Shen、Daopeng Sheng、Shun-Yi Wang
DOI:10.1021/acs.orglett.3c00526
日期:2023.3.17
method for the synthesis of 1,3-dibenzenesulfonylpolysulfane (DBSPS), which further reacts with boronicacids to afford thiosulfonates. Commercially available boron compounds greatly expanded the range of thiosulfonates. Experimental and theoretical mechanistic investigations suggested that DBSPS could provide both thiosulfone fragments and dithiosulfone fragments, but the generated aryl dithiosulfonates
Nonbasic Synthesis of Thioethers via Nickel-Catalyzed Reductive Thiolation Utilizing NBS-Like <i>N</i>-Thioimides as Electrophilic Sulfur Donors
作者:Yuenian Xu、Yong Liu、Yan Zhang、Kefang Yang、Yan Wang、Jiajian Peng、Xinxin Shao、Ying Bai
DOI:10.1021/acs.joc.2c02360
日期:2023.3.3
The nonbasic synthesis of unsymmetricalthioethers via nickel-catalyzed reductive thiolation between aryl(hetero) iodides and N-thioimides is illustrated. N-Bromosuccinimide (NBS)-like N-thioimides were found quite reactive toward thiolation with carbon electrophiles, and a series of structurally varied thioethers were successfully prepared undermild reaction conditions. The transformation was featured