Cycloaddition in Synthesis of Sulfonamide Derivatives. IV. One-Pot Synthesis of 3-Dimethylamino-4,1,2-benzoxathiazine 1,1-Dioxides, 3-Methoxy-4-methyl-1,2,4-benzothiadiazine 1,1-Dioxide and 3-Dimethylamino-1,4,2-benzodithiazine 1,1-Dioxides.
Aryldithiocarbamates as thiol alternatives in Cu-catalyzed C(aryl)–S coupling reactions using aryldiazonium tetrafluoroborate salts
作者:Soumya Dutta、Amit Saha
DOI:10.1039/c9ob01976f
日期:——
method for the synthesis of unsymmetrical diaryl sulfides has been developed by the C-S cross coupling of aryldithiocarbamates and aryldiazonium salts in the presence of CuI-2,2'-bipyridine and Zn. Aryldithiocarbamate compounds have been used here as thiol substitutes. The protocol shows wide substrate scope and good yields of the products.
Copper-Catalyzed<i>S</i>-Arylation Starting from Arylboronic Acids and Tetraalkylthiuram Disulfide
作者:Wan Xu、Fan Gao、Zhi-Bing Dong
DOI:10.1002/ejoc.201701757
日期:2018.2.14
In the presence of Cu2O and pyridine, arylboronicacids couple with tetraalkylthiuramdisulfides smoothly to furnish the desired phenyl dithiocarbamates in good to excellent yields. The broad substrate scope, short reaction time, commercially available cheap substrates, easy performance, and nice yields make this approach attractive.
Synthesis of Aryl Dithiocarbamates from Tetramethylthiuram Monosulfide (TMTM) and Aryl Boronic Acids: Copper-Catalyzed Construction of C(sp2)–S Bonds
作者:Xu-Ling Xia、Qi-Long Zhu、Zhi-Bing Dong、Jin-Quan Chen、Zhen Shi
DOI:10.1055/a-1645-6040
日期:2022.1
A highly efficient method for the synthesis of S-aryl dithiocarbamates is reported. By using tetramethylthiuram monosulfide (TMTM) and aryl boronic acids as starting materials, C(sp2)–S bond-forming reactions proceed smoothly to give the desired aryl dithiocarbamates in good to excellent yields. The methodology features a simple procedure, broad functional group tolerance and excellent yields, whilst
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 convenient and efficient protocol for the S-arylation of sodium dialkyldithiocarbamates was developed. With the catalysis of copper(I) bromide, sodium dialkyldithiocarbamates coupled with aryl boronic acids giving the C-S coupling products smoothly in good to excellent yields. This protocol features easily available starting materials, easy performance, short reaction time, broad substrate scope