Reaction of 6 with diphosphane Ph2P(CH2)2PPh2 (dppe) in 1:1 ratio promotes liberation of the sulfur donor atom from Pd(II) and gives the mononuclear cationic complex 13 bearing the ligand in bidentate N,Nchelation and the diphosphane in P,P chelation. Solid-state structure of 13 determined by X-ray crystallography confirms the labile character of the thioether group and reveals a strong interaction between
摘要四个具有(2-吲哚基)亚氨基膦烷与硫醚或硒醚部分的四齿配体,通式为2-C8H6N(Ph2P = NC6H4XR)[X = S,R = CH3(2),C6H5(3); X = Se,R = CH 3(4),C 6 H 5(5)]被合成并通过单晶X射线晶体学充分表征,包括配体(2)的结构。用PdCl2( CN)2处理配体2–5会产生非对称的N,N,X-Pd(II)钳形配合物[PdCl 2-C8H5N(Ph2P =NC6H4XR-κ3-N,N,X)}]] [ X = S,R = CH 3(6),C 6 H 5(7);X = Se,R = CH 3(8),C 6 H 5(9)]。所有配合物在光谱和单晶X射线晶体学上都得到了充分表征。在存在NaPF6或NaBF4的情况下,用中性配体NEt3,吡啶和PPh3处理6得到单核阳离子络合物10、11、12,其中Cl-被相应的配体取代。阳离子配合物1
Ultrasound-promoted organocatalytic enamine–azide [3 + 2] cycloaddition reactions for the synthesis of ((arylselanyl)phenyl-1<i>H</i>-1,2,3-triazol-4-yl)ketones
作者:Gabriel P Costa、Natália Seus、Juliano A Roehrs、Raquel G Jacob、Ricardo F Schumacher、Thiago Barcellos、Rafael Luque、Diego Alves
DOI:10.3762/bjoc.13.68
日期:——
The use of sonochemistry is described in the organocatalytic enamine-azide [3 + 2] cycloadditionbetween 1,3-diketones and aryl azidophenyl selenides. These sonochemically promoted reactions were found to be amenable to a range of 1,3-diketones or aryl azidophenyl selenides, providing an efficient access to new ((arylselanyl)phenyl-1H-1,2,3-triazol-4-yl)ketones in good to excellent yields and short
Organocatalytic Synthesis of (Arylselanyl)phenyl-1<i>H</i>-1,2,3-triazole-4-carboxamides by Cycloaddition between Azidophenyl Arylselenides and β-Oxo-amides
作者:Natália Seus、Bruna Goldani、Eder J. Lenardão、Lucielli Savegnago、Márcio W. Paixão、Diego Alves
DOI:10.1002/ejoc.201301547
日期:2014.2
We describe the use of β-oxo-amides in organocatalyticcycloaddition with aryl azidophenyl selenides. The cycloaddition reactions were performed under mild conditions, with β-oxo-amides and aryl azidophenyl selenides in the presence of a catalytic amount of Et2NH (5 mol-%), and the corresponding products were obtained in good to excellent yields. This organocatalytic methodology tolerated a range of
Sonochemistry in organocatalytic enamine-azide [3+2] cycloadditions: A rapid alternative for the synthesis of 1,2,3-triazoyl carboxamides
作者:Daiane M. Xavier、Bruna S. Goldani、Natália Seus、Raquel G. Jacob、Thiago Barcellos、Márcio W. Paixão、Rafael Luque、Diego Alves
DOI:10.1016/j.ultsonch.2016.05.007
日期:2017.1
We described herein the use of sonochemistry in the organocatalytic enamine-azide [3+2] cycloadditions of β-oxo-amides with a range of substituted arylazides. These sonochemical promoted reactions were found to be amenable to a range of β-oxo amides or arylazides, providing an efficient access to new N-aryl-1,2,3-triazoyl carboxamides in good to excellent yields and short times of reaction.
Phenylselanyl-1H-1,2,3-triazole-4-carbonitriles: synthesis, antioxidant properties and use as precursors to highly functionalized tetrazoles
作者:Lucielli Savegnago、Manoela do Sacramento、Lucimar M. P. Brod、Mariana G. Fronza、Natália Seus、Eder J. Lenardão、Márcio W. Paixão、Diego Alves
DOI:10.1039/c5ra22445d
日期:——
We describe herein our results on the synthesis, antioxidant properties and chemical diversification of phenylselanyl-1H-1,2,3-triazole-4-carbonitriles.