49769-80-4Relevant academic research and scientific papers
A concise route towards isoflavans
Basuli, Suchand,Chinnabattigalla, Sreenivasulu,Gupta, Kshitija,Gedu, Satyanarayana
, p. 182 - 194 (2020/10/19)
Isoflavans have gained considerable interest owing to their potential health benefits. Herein, we have presented a straightforward strategy for isoflavans synthesis. The strategy features an intermolecular [Cu]-catalyzed arylation of malonates and an intr
Pyrimidine onium compound and application thereof
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Paragraph 0352; 0336-0337, (2019/10/23)
The invention relates to a pyrimidine onium compound, nitride oxides, salt of the nitride oxides and a composition comprising the compound. The invention further relates to an application of the compound to plant pest control.
Protonation and transformations of α-diazo-β-dicarbonyl compounds in superacids: generation of the strongest carbon-centered cationic electrophiles at the protonation of diazomalonates in Friedel–Crafts reactions
Satumov, Eugeniy T.,Medvedev, Jury J.,Nilov, Denis I.,Sandzhieva, Maria A.,Boyarskaya, Irina A.,Nikolaev, Valerij A.,Vasilyev, Aleksander V.
, p. 4835 - 4844 (2016/07/18)
Protonation of diazodiketones N2C(COR)2in Br?nsted superacids (TfOH, FSO3H, TfOH–SbF5) gives rise to stable and non-reactive O,O-diprotonated at carbonyl oxygens species N2C(C(=OH+)R)2, which were studied by means of1H and13C NMR. Diazomalonates N2C(CO2Alk)2, contrary to diazodiketones, react with TfOH or HF, releasing nitrogen and producing triflates of oxymalonates TfOCH(CO2Alk)2or fluoromalonates FCH(CO2Alk)2, respectively. Diazoketoesters N2C(COR)(CO2Alk) react in the same way only with TfOH, but not with HF. The reactions of diazomalonates with arenes ArH (benzene, toluene, xylenes) in TfOH solution yield corresponding Friedel–Crafts reaction products ArCH(CO2Alk)2. According to performed DFT calculations, trication+CH(C(=OH+)OMe)2, a possible intermediate, which is derived from protonation of dimethyl diazomalonate, should be the strongest cationic carbon-centered electrophile known up to date.
Stereoselective synthesis of nipecotic acid derivatives via palladium-catalyzed decarboxylative cyclization of γ-methylidene-δ- valerolactones with imines
Shintani, Ryo,Murakami, Masataka,Hayashi, Tamio
supporting information; experimental part, p. 457 - 459 (2009/07/11)
(Chemical Equation Presented) A new synthetic method of multisubstituted nipecotic acid (piperidine-3-carboxylic acid) derivatives has been developed by way of palladium-catalyzed decarboxylative cyclization of γ-methylidene- δ-valerolactones with (mines.
DIMETHYL ARYLMALONATES FROM CERIUM(IV) AMMONIUM NITRATE PROMOTED REACTIONS OF DIMETHYL MALONATE WITH AROMATIC COMPOUNDS IN METHANOL
Baciocchi, Enrico,Dell'Aira, Donatella,Ruzziconi, Renzo
, p. 2763 - 2766 (2007/10/02)
Aromatic compounds undergo homolytic malonylation by reaction with cerium(IV) ammonium nitrate and dimethyl malonate in methanol at room temperature.
