64252-53-5Relevant articles and documents
Exploring the Influence of Phosphine Ligation on the Gold-Catalyzed Hydrohydrazination of Terminal Alkynes at Room Temperature
Rotta-Loria, Nicolas L.,Chisholm, Alicia J.,MacQueen, Preston M.,McDonald, Robert,Ferguson, Michael J.,Stradiotto, Mark
supporting information, p. 2470 - 2475 (2017/07/17)
The synthesis and/or NMR/X-ray characterization of a new series of (L)AuCl complexes is reported, featuring BippyPhos, AdJohnPhos, silyl ether based ligands including OTips-DalPhos, and PAd-DalPhos. These complexes, along with previously reported analogue
Lewis acid-promoted direct synthesis of N-unsubstituted hydrazones via the reaction of hydrazine with acetophenone and isatin derivatives
El-Azab,Ghabbour,El-Husseiny,Maarouf,Mohamed,Abdel-Aziz
, p. 2837 - 2844 (2017/03/22)
Hydrazones 2–22 were synthesized via the reaction of acetophenone with isatin derivatives and anhydrous hydrazine promoted by BF3 as a Lewis acid at 0°C. Structures of the synthesized hydrazones were determined on the basis of NMR and X-ray crystallograph
Sulphur promoted C(sp3)-C(sp2) cross dehydrogenative cyclisation of acetophenone hydrazones with aldehydes: Efficient synthesis of 3,4,5-trisubstituted 1H-pyrazoles
Vanjari, Rajeshwer,Guntreddi, Tirumaleswararao,Kumar, Saurabh,Singh, Krishna Nand
supporting information, p. 366 - 369 (2015/01/09)
A novel strategy for the cross dehydrogenative coupling (CDC) of acetophenone hydrazones and aldehydes has been developed for the synthesis of highly substituted pyrazoles. This work, for the first time, uses elemental sulfur as a promoter as well as a hydrogen acceptor in effecting the Csp3-Csp2 bond formation via C-H activation. This journal is
Facile Synthesis of Isoindolinones via Rh(III)-Catalyzed One-Pot Reaction of Benzamides, Ketones, and Hydrazines
Zhang, Yan,Wang, Dahai,Cui, Sunliang
supporting information, p. 2494 - 2497 (2015/05/27)
A Rh(III)-catalyzed one-pot reaction of benzamides, ketones, and hydrazines for facile access to isoindolinones is reported. In this method, various ketones are transformed into donor-donor diazo compounds, which sequentially engage in insertion with benzamides under Rh(III) catalysis to generate N-substituted quaternary isoindolinones. (Chemical Presented).
Room-temperature hydrohydrazination of terminal alkynes catalyzed by saturated abnormal n-heterocyclic carbene-gold(I) complexes
Manzano, Ruben,Wurm, Thomas,Rominger, Frank,Hashmi, A. Stephen K.
supporting information, p. 6844 - 6848 (2014/06/09)
A number of saturated abnormal N-heterocyclic carbene (NHC) complexes of gold, in combination with KBArF4 as activator, were successfully applied in the chemoselective addition of hydrazine to alkynes. The reaction proceeds even at r
Azine-substituted phenylacetic acid derivatives and fungicides containing these
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, (2008/06/13)
Compounds of the formula I STR1 where X is hydrogen, halogen, alkyl, alkoxy, trifluoromethyl, cyano or nitro, Y is an amino, methylamino or dimethylamino group, Z is a group CHCH3, CHOCH3 or NOCH3, R is hydrogen or alkyl,
CYCLOADDITIONS OF DISUBSTITUTED DIAZO COMPOUNDS TO P-CHLORO(BISTRIMETHYLSILYL) METHYLENE PHOSPHINE.
Thoraval, J. Y.,Nagai, W.,Yeung Lam Ko, Y. Y. C.,Carrie, R.
, p. 3859 - 3868 (2007/10/02)
Disubstituted diazo compounds rapidly add to P-chloro (bistrimethylsilyl) methylene phosphine at low temperature. 1H, 31P and 13C NMR allow the characterization of the resulting cycloadducts and the establisment of the stereochemistry of the resulting cycloadducts which are potential precursors of ?3λ5 bis methylene phosphorane by nitrogen extrusion.
Diazoalkane Complexes of Molybdenum and Tungsten
Hillhouse, Gregory L.,Haymore, Barry L.
, p. 1537 - 1548 (2007/10/02)
Ordinary diazoalkanes, N2CHR' and N2C(CH3)R' (R' = C6H5, p-CH3C6H4), were found to react with M(CO)3(S2CNR2)2 (M = Mo, W; R = CH3, C2H5; R2 = (CH2)4) at room temperature to form stable complexes of the type M(CO)(N2CHR')(S2CNR2)2 which were conveniently isolated in good yields.Oxidaion of M(CO)(N2CHR')(S2CNR2)2 with 1 equiv of Cl2 or Br2 produced MX2(N2CHR')(S2CNR2)2 (X = Cl, Br) which were isolated as chloroform solvates.The addition of excess HBr to W(CO)(N2CHR')(S2CNMe2)2 gave a red solid which analyzed for WBr2(N2H2CHR')(S2CNMe2)2.Physical and spectroscopic data suggest that the diazoalkane ligands in the above complexes behave as terminal, singly bent, four-electron donor ligands.The NMR chemical shifts of the methine proton in N2CHR' ligands indicate that the M(S2CNR2)2 unit is strogly electron withdrawing.Syntheses for new tungsten compounds, W(CO)3(S2CNR2)2, W(CO)2(S2CNR2)2, W(CO)2(L)(S2CNR2)2 (L = p-CH3C6H4NHNH2, 4-CH3C5H4N), WBr2(S2CNR2)2, W(S2CNR2)4, and WBr3(S2CNR2)2, are also reported.
