Reactions of Thionitrites or Thionitrates with Carbanions
作者:Koichi Shinhama、Yong Hae Kim、Shigeru Oae
DOI:10.1246/bcsj.53.1771
日期:1980.6
Reaction of several thionitrites (RSNO) or thionitrates (RSNO2) with carbanions such as Grignard reagents, alkyllithium, or the carbanion of diethyl malonate gave C-alkylthio derivatives such as sulfides or diethyl (alkylthio)malonates.
Dinitrogen tetroxide supported on polyvinylpyrrolidone (PVP–N2O4): a new nitrosating and coupling agent for thiols and a selective oxidant for sulfides and disulfides
S-nitrosothiols (thionitrites) using this new nitrosatingagent in n-hexane or CHCl3 at 10°C. With this reagent, thiols were also converted into their corresponding disulfides. Selective oxidation of sulfides to sulfoxides and disulfides to thiosulfonates can also be achieved by this reagent at room temperature. By using an excess of the reagent, the selective one-pot synthesis of thiosulfonates from thiols
将气态N 2 O 4固定在聚乙烯吡咯烷酮上,得到稳定的聚合试剂。硫醇转化为小号在使用这个新的亚硝化剂-nitrosothiols(thionitrites)ñ -己烷或氯仿3在10℃下。使用该试剂,硫醇也被转化为其相应的二硫化物。在室温下,也可以通过该试剂将硫化物选择性氧化为亚砜,将二硫化物选择性氧化为硫代磺酸盐。通过使用过量的试剂,在室温下也从硫醇选择性地一锅合成硫代磺酸盐。
Direct Conversion of Arylamines to the Halides by Deamination with Thionitrite or Related Compounds and Anhydrous Copper(II) Halides
作者:Shigeru Oae、K\={o}ichi Shinhama、Yong Hae Kim
DOI:10.1246/bcsj.53.1065
日期:1980.4
Reactions of various arylamines with either t-butyl thionitrite, t-butyl thionitrate, or p-toluenesulfonyl nitrite in the presence of anhydrous copper(II) halides under mild conditions gave corresponding aryl halides in good yields. This reaction in the presence of such olefins as acrylonitrile, styrene, and acrylic acid gave the corresponding 2-aryl-1-haloethanes as the main products. t-Butyl thionitrite
在无水卤化铜 (II) 存在下,各种芳基胺与亚硫硝酸叔丁酯、亚硫硝酸叔丁酯或对甲苯磺酰亚硝酸酯在温和条件下反应,以良好的收率得到相应的芳基卤化物。在丙烯腈、苯乙烯和丙烯酸等烯烃存在下,该反应得到相应的 2-芳基-1-卤代乙烷作为主要产物。由于硫-氮键较弱,亚硝酸叔丁酯、亚硝酸叔丁酯和对甲苯磺酰亚硝酸酯是比亚硝酸烷基酯或硝酸烷基酯更好的脱氨基试剂。
Direct Conversion of Arylamines to the Corresponding Halides, Biphenyls, and Sulfides with<i>t</i>-Butyl Thionitrate
作者:Shigeru Oae、K\={o}ichi Shinhama、Yong Hae Kim
DOI:10.1246/bcsj.53.2023
日期:1980.7
t-Butyl thionitrate have been found to be an excellent diazotizing reagent of arylamines in aprotic nonpolar media, affording eventually such products as aryl chlorides, aryl bromides, aryl iodides, biphenyls, and aryl methyl sulfides in the presence of CCl4, CHBr3, I2, benzene, and dimethyl disulfide, respectively, via extrusion of N2.