The palladium(0)-catalyzed reaction of arylazo aryl sulfones with olefins in benzene at 80°C gave aryl-substituted olefins in good yield. Diarylpalladium(II) species was proposed as an intermediate in this reaction.
在 80°C 下,芳基偶氮芳基砜与烯烃在苯中的钯 (0) 催化反应以良好的收率得到芳基取代的烯烃。二芳基钯 (II) 物种被提议作为该反应的中间体。
Rhodium(II)-Catalyzed Synthesis of<i>N</i>-Aryl-<i>N′</i>-tosyldiazenes from Primary Aromatic Amines Using (Tosylimino)aryliodinane: A Potent Stable Surrogate for Diazonium Salts
The first example of the single-step synthesis of N-aryl-N'-tosyldiazenes from primary aromaticamines is described. A wide range of aromaticamines provided the corresponding products in high yields via an N−N bond formation with Rh(II)-nitrene intermediates, generated in situ from dirhodium(II) complex catalysts and (tosylimino)-2,4,6-trimethylphenyliodinane (TsN=IMes), followed by oxidation. The
描述了从芳香伯胺一步合成 N-芳基-N'-甲苯磺酰基二氮烯的第一个例子。范围广泛的芳香胺通过与 Rh(II)-硝烯中间体形成 NN 键以高产率提供相应的产物,由二铑 (II) 配合物催化剂和 (tosylimino)-2,4,6- 原位生成三甲基苯基碘烷 (TsN=IMes),然后氧化。合成的 N-芳基-N'-甲苯磺酰基二氮烯已成功证明可作为重氮盐在芳香伯胺的两步脱氨基转化中的有效稳定替代物。
Copper-catalyzed synthesis of aryldiazo sulfones from arylhydrazines and sulfonyl chlorides under mild conditions
this paper, aryldiazo sulfones are prepared from tandem sulfonylation/dehydrogenation reactions of arylhydrazines and sulfonyl chlorides. The transformations proceed well in the presence of catalytic CuSO4·5H2O, leading to aryldiazo sulfones in good to excellent yields. It is believed that this protocol represents a safe and convenient model for the synthesis of these versatile aryldiazo sulfones under
Catalytic reaction of arylazo arylsulfone with olefins in the presence of tetrakis(triphenylphosphine)palladium(0) was investigated. Arylation of olefins was the major product, and 1:1 adduct of arylazo and arenesulfonyl group to olefins was obtained as minor product. Diarylpalladium(II) species was proposed as an intermediate in this reaction.
研究了在四(三苯基膦)钯 (0) 存在下芳基偶氮芳基砜与烯烃的催化反应。烯烃的芳基化是主要产物,芳基偶氮和芳烃磺酰基与烯烃的 1:1 加合物作为次要产物得到。二芳基钯 (II) 物种被提议作为该反应的中间体。
The Reaction of Arylazo Aryl Sulfones with Carbon Monoxide and Nucleophiles Catalyzed by the Palladium(0) Complex
The reaction of arylazo aryl sulfone (1) with carbonmonoxide in the presence of the palladium(0) catalyst affords substituted benzoic acid in a good yield, together with minor yields of diaryl ketone and biaryl. The reactions of 1 with carbonmonoxide and such nucleophiles as alcohols and amines under similar conditions give esters and amides, respectively.