61185-76-0Relevant academic research and scientific papers
Palladium(ii)-catalyzed direct O-alkenylation of 2-arylquinazolinones with N-tosylhydrazones: an efficient route to O-alkenylquinazolines
Lingayya, Rajaka,Vellakkaran, Mari,Nagaiah, Kommu,Tadikamalla, Prabhakar Rao,Nanubolu, Jagadeesh Babu
supporting information, p. 1672 - 1675 (2017/02/10)
An efficient Pd(ii)-catalyzed direct O-alkenylation of 2-arylquinazolinones with simple ketone-derived N-tosylhydrazones is reported. In this reaction, O-alkenylquinazolines were obtained in good yields, with excellent functional group tolerance. Pd-carbe
Enantioselective Synthesis of Trisubstituted Allenes via Cu(I)-Catalyzed Coupling of Diazoalkanes with Terminal Alkynes
Chu, Wen-Dao,Zhang, Lei,Zhang, Zhikun,Zhou, Qi,Mo, Fanyang,Zhang, Yan,Wang, Jianbo
, p. 14558 - 14561 (2016/11/18)
A highly enantioselective synthesis of trisubstituted allenes has been achieved through Cu(I)-catalyzed cross-coupling of aryldiazoalkanes and terminal alkynes with chiral bisoxazoline ligands. Alkynyl migratory insertion of Cu(I) carbene is proposed as t
A Novel Synthesis of Arylsulfonyl Hydrazine Derivatives Via the Reaction of Arylsulfonyl Hydrazone Salts and Hydrazonoyl Chlorides
Khalili, Gholamhossein
, p. 1882 - 1886 (2015/10/29)
An efficient method for the synthesis of arylsulfonyl hydrazines and diazo compounds via arylsulfonyl hydrazone salts is described. The reaction was performed in DMF using hydrazonoyl chlorides and sodium arylsulfonyl hydrazones, which were easily prepare
Synthesis and esterification reactions of aryl diazomethanes derived from hydrazone oxidations catalyzed by TEMPO
Perusquía-Hernández, Carolina,Lara-Issasi, Gonzalo R.,Frontana-Uribe, Bernardo A.,Cuevas-Ya?ez, Erick
, p. 3302 - 3305 (2013/06/27)
Diverse hydrazones were oxidized to the corresponding diazoalkanes using sodium hypochlorite in the presence of catalytic amounts of TEMPO (2,2,6,6-tetramethylpiperidinyloxy). A library of diverse benzhydryl esters and analogues was prepared from diazoalkanes obtained by this procedure.
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.
Products from Reactions of Methyl (E)-2-Cyano-3-(p-substituted-phenyl)acrylates with 1-Phenyldiazoethane and Cycloreversion of Secondary Pyrazolines
Nagai, Wakatu,Hirata, Yumiko
, p. 635 - 640 (2007/10/02)
In dichloromethane, the reaction of methyl (E)-2-cyano-3-(p-substituted-phenyl)acrylates (2) with 1-phenyldiazoethane (1), prepared from 2 molar equiv of acetophenone hydrazone, produced methyl 2-cyano-4-phenyl-4-(p-substituted-phenyl)-2-pentenoates (3), 1-cyano-1-(methoxycarbonyl)-2-methyl-2-phenyl-3-(p-substituted-phenyl)cyclopropanes (4), and 4-cyano-4-(methoxycarbonyl)-3-methyl-3-phenyl-5-(1-phenyl-1-(p-substituted-phenyl)ethyl)-1-pyrazolines (5).Compounds 5 were found to be derived from compounds 3 and 1.Compounds 5 were different from the primary pyrazolines derived from compounds 1 and 2, both in mode of formation and properties.Compounds 5, when decomposed thermally or photochemically, produced the initial olefins 3.This decomposition is an example of "true" cycloreversion.
